Animals Archives

May 14, 2024May 13, 2024

A Balanced System of Ocean Life

Kelp safeguards the ocean’s ecology by providing a home for many sea creatures, preventing coastal erosion, and sequestering vast amounts of carbon dioxide. The last century has seen a massive decrease in kelp growing along the California coast because of an increase in sea urchins that eat kelp. Sea otters feed on sea urchins, and as people killed sea otters for their fur, the urchin population increased, reducing the underwater kelp forests. It is easy to see that God has given us a balanced system of ocean life, but humans sometimes upset the balance.

Sea otters have a fast metabolism, requiring them to eat a fourth of their body weight daily, and sea urchins are their favorite food. Because of the fur trade, sea otters disappeared from Northern and Southern California, with a small population remaining in the central part of the state. In 1913, California made sea otters protected mammals, but 1977’s Endangered Species Act gave them more protection. Since then, central California has seen a 58% increase in kelp while kelp in the northern and southern coasts has declined. Research has shown that sea otters are the reason for the ecological improvement in Central California.

Any time humans disturb the balanced system of ocean life or any ecosystem, negative consequences result. The biological design of our planet does not just consist of separate independent organisms, but all of life on Earth is interconnected. An analogy might be the workings of an airplane. Multiple systems operate within an aircraft, including the landing gear, engines, electrical system, hydraulics, wings, rudder, etc. For it to fly, all of those systems must work together. Engineers must design a plan that integrates those systems. The aircraft doesn’t happen by accident but by the design of intelligent engineers.

All of life on Earth is interrelated and not a product of chance. There is design in all of life and in the planet itself that allows us to exist. In Proverbs 8, “Wisdom” encourages us to see God’s wise design on this planet. In verses 22-31, we see specific wisdom shown in various applications involved in preparing planet Earth for life. Verses 35-36, we see the alternative to understanding God’s use of wisdom in creating the world in which we live. Verse 35 tells us that those who find wisdom find life, and those who do not find wisdom harm themselves and prefer death. We all see all around us the interaction of living things and what happens when humans destroy one of them.

Let us learn from the balanced system of ocean life that includes kelp, sea otters, and urchins. Caring for all life is a challenge God has given us in Genesis 2:15. The need to do this is more clear today than ever before.

Reference: Smithsonian magazine and The Week of April 26, 2024, page 21.

May 9, 2024May 7, 2024

Bar-tailed Godwit Migration

In October 2022, a small bird set a new world record for long-distance flying as it flew nonstop from its hatching ground in Alaska to its wintering ground in Tasmania. This bird did not land, eat, or drink for 250 hours (eleven days) as it flew at an average ground speed of 30 miles per hour, traveling from one end of the Earth to the other. The only human-made machine that can do that is a Boeing 777 with a 213-foot wingspan and powerful jet engines. The bird was a bar-tailed godwit.

Bar-tailed godwits, as scientists have discovered, are well-equipped for their long-distance journeys. They possess a high metabolic rate and a physiological tolerance for elevated cortisol levels. However, it is their feather design that truly enables them to undertake these arduous journeys. The feathers of a bar-tailed godwit provide insulation, keeping the bird warm even in cold air masses. They also repel rain, and their shape is conducive to long flight hours, aiding the bird’s forward propulsion.

In recent years, scientific research on feathers has shown that they are perfectly engineered for a wide variety of uses. The feathers of a penguin are different from those of a hummingbird. The reason should be obvious, as these two birds live in very different environments. Fossil remains have shown that many dinosaurs had feathers. They used them to catch insects, keep warm, facilitate swimming or feeding in water, and attract mates. Those of us who believe there is design and purpose in all living things are not surprised by these discoveries. A contractor building a house will use materials that work in all kinds of houses, modifying them to fit the particular building under construction. In the same way, God uses materials to meet the needs of His organisms in various ways we are only beginning to understand.

Skeptics have questioned why God would design organisms to travel such immense distances. Does He have something against bar-tailed godwits? In this case, these birds benefit two environments with minimal resources. Alaska doesn’t have large amounts of topsoil to supply the needs of its plants. Tasmania is an island state of Australia, located 150 miles south of the mainland. Like Alaska, Tasmania has limited natural resources, but the arrival of the bar-tailed godwit brings nutrients that allow life to flourish on this island. The design of feathers makes that possible.

God sustains isolated environments by having lifeforms travel between them or from nutrient-rich areas to areas lacking those nutrients. God sustains the Earth by migrations of everything from insects to sea life to birds to large mammals. Traveling between needy areas sustains those areas and the lifeforms that travel between them.

Reference: Scientific American for May 2024, pages 41-51

April 30, 2024April 30, 2024

Animals Can Learn From Their Peers

Scientists want to know how much animals can learn from their peers. How much animal behavior is genetic, and how much can they learn by watching other members of their species?

Many years ago, a friend who raised golden labradors showed me how her favorite lab had learned to recognize the design and shape of an inverted can that covered a treat. She used ten similar cans, but only one had a pattern on it. She had taught her favorite dog to turn over that can to get the treat, which was an odorless biscuit to eliminate the dog using its sense of smell.

The dog got the right can ten times out of ten, going straight to the can with the treat every time. She then took a puppy and put it with the adult dog and the ten cans. The puppy followed the adult dog one or two times, and then when it was alone, it ran straight to the can with the treat and turned it over. Clearly, animals can learn from their peers since the puppy had learned by watching the adult dog.

Various experiments show animals learning from others of their species, but what about insects? Researchers at Queen Mary University in London trained bumblebees to do complex behavioral actions. The researchers set up a container with bumblebees and a blue lever that unlocked a door when pushed. There was also a red lever to open another door leading to a container of sugar water. The researchers successfully taught a group of bumblebees how to press the two levers in sequence to access the sugar water.

When they added new bees to the container, the newcomers “watched the original bees and figured out how to complete the puzzle—showing for the first time that insects can learn multistep processes through social interaction.” We could challenge this experiment since bees have a built-in ability to convey information to other bees. When a bee returns to the hive after finding food, it can do a “dance” that tells its fellow bees where the food is.

Animals and insects communicate, but language is unique to humans. The Bible story of the Tower of Babel (Genesis 11:1-9) shows how essential language is to human interaction. Animals can learn from their peers, but God gave humans alone the ability to communicate using language and symbols. Only humans can convey moral issues, beliefs, and values through grammar and vocabulary.

References: phys.org and nationalgeographic.com

April 26, 2024April 23, 2024

The Design of Peregrine Falcons

Human structures often upset the natural balance of birds. One example is the abundance of pigeons in urban areas, which disfigure statues and decorative stone buildings and spread various diseases. One solution to the pigeon problem has been the introduction of peregrine falcons. The design of peregrine falcons has allowed them to adjust to human structures and use their highly designed physical characteristics to defend themselves in both city and rural areas.

The peregrine falcon is not exceptionally large, but it is designed for high-speed flight and uses that ability to kill other birds, even eagles. The peregrine will fly high and dive on an intended prey at over 200 miles per hour. That speed produces many challenges for these birds. The change in pressure would cause the lungs of the peregrine falcon to burst, except for the design of its nostrils. The falcon has bony tubercles on its nostrils that guide airflow away from the nasal passages, reducing the change in air pressure.

Another problem with a high-speed dive is vision. Most of us have had the experience of having our eyes water when facing a strong wind, but the peregrine falcon has nictitating membranes that are essentially a third eyelid that keeps the eyes clear. Also, the design of peregrine falcons shows a dark area below the eye, which reduces glare.

In the city, pigeons comprise a large percentage of the peregrine falcon diet. The birds nest in the windows of skyscrapers, giving people in the offices a view of their lifestyles and the production of offspring. Several years ago, office workers in South Bend, Indiana, complained that peregrine falcons were killing pigeons and bringing their victims back to the nest. People in tall buildings were horrified when the falcons tore up the bodies of pigeons to feed their young. They didn’t realize that peregrine falcons help maintain the balance of birds in urban areas, meeting an important need for city dwellers. In the wild, peregrine falcons eat rodents and other small mammals.

Airplane designers have studied the design of peregrine falcons and copied many of their features. Like many other engineering problems, we can look to what God has created and copy the design to solve our own problems. Neither a jet airplane nor a peregrine falcon is a product of accidental change. Design requires intelligence and purpose, and the peregrine falcon is a classic example of both.

Reference: allaboutbirds.org, nationalgeograph i c.com, and wikip e dia.org

April 24, 2024April 22, 2024

Rapid Evolution of the Florida Snail Kite

The Florida snail kite is a captivating bird found in southern Florida and the Everglades. Recently, researchers have seen a perplexing rapid evolution of the Florida snail kite. This bird, unlike any other, exclusively feeds on apple snails. These snails, with no significant predators, would overpopulate if not for the presence of the Florida snail kite, leading to a unique ecological balance.

There are always predators in the natural world to keep any species from totally wiping out its food supply and becoming extinct. Problems arise when humans upset the balance by eliminating the predators or introducing a species that has no natural enemies. That has happened in many places. For example, in Australia, many years ago, people introduced rabbits and eradicated the dingos that would have controlled the rabbit population. That allowed the rabbits to multiply in massive numbers, resulting in various environmental problems.

In the case of the Florida snail kite, a larger apple snail was introduced, posing a challenge as the bird’s beak was not designed to extract such snails from their shells. Consequently, the apple snail population surged due to the absence of predators, while the Florida snail kite population dwindled. However, in a remarkable turn of events, a mutation in the Florida snail kites led to the development of a larger and longer beak, enabling them to open the shells of the larger snails. This rapid evolution of the Florida snail kite restored the balance between the birds and the snails.

The problem for evolutionists in this situation is that it requires several mutations. A rapid change like this does not fit classical evolutionary theory, which says that genetic changes take a vast number of years to become totally distributed throughout a population. The change in the Florida snail kite population happened within ten years.

Many geneticists and other scientists are baffled. Dr. Robert Fletcher of the University of Florida has been studying the Florida snail kite and hopes to find an explanation for this rapid change. Whatever the explanation, it is a great testimony to the God who created all living things. His design is so complex that it takes humans a long time to understand. The rapid evolution of the Florida snail kite is just one of many cases where classical evolutionary theory doesn’t fit the evidence.

Reference: pbs.org

April 23, 2024April 22, 2024

A Very Tiny Frog

How small can a vertebrate get? The Brazilian flea toad (brachycephalus pulex) is the smallest known amphibian and the smallest known vertebrate. Despite its name, it isn’t a flea or a toad but a frog. This very tiny frog is small enough that two of them could sit side-by-side on your pinkie fingernail. From snout to rump, the males average about 7 millimeters and the females 8 millimeters.

The Brazilian flea toad’s name can be misleading. These frogs were actually discovered and named in 2011, but it wasn’t until a decade later that they were studied in detail. While both toads and frogs are amphibians, there are some key differences. Toads have drier, bumpier skin and are typically found in dry environments, while frogs have smoother, more moist skin and tend to live near water.

Brazilian flea toads have a bright yellow-orange color, which is probably an aposematic signal to potential predators. Aposematism in animals is often a warning that their skin may contain toxins that make them unpleasant or dangerous to eat. A creature this small needs some way to protect itself.

Why would such a very tiny frog exist? They are endemic to a few forested hills in the southern coastal area of Brazil. Researchers have not studied them enough to understand the niche they fill in their environment, and studying such creatures as this very tiny frog is challenging. Luci Kirkpatrick of Bangor University in North Wales said that tiny creatures are “ecosystem engineers” that are “critical in making sure the food web functions properly.”

God created an ecosystem with organisms that allow life to exist in a balanced environment on Earth. The very tiny frog known as the Brazilian flea toad can teach us a lot about the small world that sustains us.

References: earth.com, mymodernmet.com, bbc.com, and onlinelibrary.wiley.com

April 17, 2024April 21, 2024

Nudibranchs in a Dazzling Array of Colors and Shapes

The diversity of life on planet Earth is astounding. One of the life forms that most of us are not aware of is the order nudibranchia. Nudibranchs are marine gastropod mollusks that shed their shells after the larval stage. The name “nudibranch” means “naked gills.” They are found worldwide in around 3,000 species, and they can be as small as a thumbtack or as long as 20 inches. Oceans contain nudibranchs in a dazzling array of colors and shapes.

What makes the nudibranchs important is that they help keep in balance some dangerous lifeforms that humans have a hard time handling. Nudibranchs will eat sponges, corals, anemones, jellyfish, and just about any stinging life forms that live in the ocean. There have been times when a species of jellyfish or stinging coral have threatened human use of an area of the ocean, but the nudibranchs have brought these creatures under control.

From the Arctic to the tropics, we find various species of nudibranchs in a dazzling array of colors and shapes, keeping balance in the ocean. However, you might assume they are just sea slugs of no value unless you know what they are. Climate change can alter the ocean’s ecological balance, but nudibranchs help control overpopulations of destructive agents in reefs and estuaries.

Most of the marine world has not yet been explored, and we have much to learn. Humans have done more to explore space than the floor of the ocean. As better technology allows us to travel into deep ocean trenches, underwater volcanoes, and isolated reefs, we will gain more understanding of what God has designed to allow life to exist in all parts of planet Earth.

Reference: Smithsonian Magazine for April-May 2024, pages 40 -48.

Nudibranch expert Gary Cobb maintains a Facebook group called Nudibran c h Central, where you can see more examples of these dazzling creatures.

April 12, 2024April 10, 2024

Then It Would Be Alive!

Origin of life research has occupied scientists for years. The media often exaggerates claims that science is getting close to creating life. “Creating RNA life in a lab” is a headline in a recent issue of The Week magazine. The story is about the Salk Institute in La Jolla, California, developing a molecule of ribonucleic acid (RNA) “that could generate accurate copies of another type of RNA.” The article went on to say, “This brings the researchers one step closer to their ultimate goal of creating an RNA molecule that can make accurate copies of itself.” The study’s co-author Gerald Joyce said, “Then it would be alive.”

Ribonucleic acid (RNA) is a polymeric molecule essential for most biological functions. It has a structure similar to deoxyribonucleic acid (DNA), which carries the genetic information in every living cell. The scientists have created the macromolecule RNA in the laboratory by combining smaller molecules. To say that if an RNA molecule could reproduce itself, “then it would be alive” is an exaggeration.

As an analogy, let’s suppose I want to make a new car, which I would call a Claytonmobile. I get an engine out of a Ford, a transmission out of a Honda, a chassis out of a Chevy, and an interior out of a Royals Royce. I put these together and announce to the world that I have created a car. In reality, what did I do? I took things already created and assembled them, but I didn’t create anything. Some of you old timers may remember the Tucker automobile, which was very much like what I just described.

This same process is happening in the scientific community attempting to create life. The goal of the group at La Jolla is to form an RNA molecule that can make copies of itself. The researchers say, “Then it would be alive.” That means they are changing the definition of life that most of us learned in biology classes from high school through graduate school. That definition says life is that which can move, breathe, respond to outside stimuli, and reproduce. When researchers can get RNA to reproduce, they will have satisfied one of the parameters, but they certainly will not have created life.

The more we know of the creation, the more we understand the wisdom and power of the Creator. In Proverbs 8:17-23, Wisdom, personified as a woman, says that those who seek her will find her and that her fruit is better than gold or silver. In verse 22, she says, “The Lord possessed me in the beginning of His way before His works of old. I was set up from everlasting, from the beginning before the earth was.” The complexity of RNA and DNA and of life itself is a great apologetic for the existence of God. We need to listen to the words of Wisdom.

Reference: The Week for March 29, 2024, page 21, reporting on a Washington Post story.

April 11, 2024April 9, 2024

Paddlefish Have a Third Eye

North American waters are home to a most interesting fish known as the spoonbill or paddlefish (Polydon spathula). These fish have an enormous bill, which is actually an antenna studded with thousands of sensory cells to detect electrical signals produced by the plankton on which they feed. The 12—to 15-inch long bill gets so much attention that people overlook another oddity: these paddlefish have a third eye.

Paddlefish have an opening between the bones of the skull called a foramen. It is located at the base of the bill between the eyes and covered by a thin skin and cartilage layer. The foramen allows light to pass through onto a nerve that goes directly to the paddlefish’s brain. It serves as a third eye, allowing the paddlefish to experience changes in light direction and seasonal changes. The third eye cannot form detailed images, but it influences biological changes in body temperature and hormone production in the fish.

As biologists study various life forms, they find common threads that run through all living things. Researchers have found barely visible vestiges of similar structures in frogs, lizards, and some sharks. Since paddlefish have a third eye, they must have a use for it, but the last detailed study of it was in 1896.

There are many things that science does not yet know about living things, but diverse features allow animals to live in Earth’s wide-ranging environments. Evolutionists assume that all life originated from a single cell in the distant past through an unguided chance process. The paddlefish bill with its sensory cells and third eye is difficult to explain by that process. God used the best plan in creating life, and part of that is the capacity to change as the environment changes. Romans 1:20 tells us that “we can know there is a God through the things He has made.”

Reference: “Third Eye of a Spoonbill” in In-Fisherman magazine for May 2024, pages 8-9.

April 3, 2024April 2, 2024

Unique Pollination System of the Jack-in-the-Pulpit

Most plants must be pollinated to reproduce, but their methods vary enormously, sometimes involving wind, birds, animals, or insects. However, the unique pollination system of the jack-in-the-pulpit (Arisaema triphyllum ) depends on fungus gnats.

The jack-in-the-pulpit’s hood resembles pitcher plants that capture and digest insects. Unlike its carnivorous counterparts, this plant uses insects, particularly fungus gnats, for pollination. It lures and ensnares these gnats by emitting a mushroom-like fragrance they find irresistible. The male flowers, blooming first, attract the gnats, which then become dusted with pollen. They manage to escape through a small hole, perfectly sized for a gnat but too small for larger insects.

The female flowers bloom next, and the gnats carry the pollen to the flower of another jack-in-the-pulpit. This cross-pollination prevents in-breeding for healthier plants. The female flowers don’t have an escape hole, so after the gnats pollinate the flowers, they are trapped and die. But, before the gnats die, they lay their eggs inside the jack-in-the-pulpit. The larvae that hatch from the eggs eat the jack-in-the-pulpit’s blossom as it decays. When the hood of the plant withers, the adult fungus gnats fly away so they can pollinate more jack-in-the-pulpits.

This unique pollination system of the jack-in-the-pulpit assures the continued survival of the plant and the gnats while controlling the gnat population. The complexity of this system shows design rather than random chance. The more we know of the creation, the more we can see the design skill and wisdom of the Creator.

References: ScienceNews and Wikipedia