Animals Archives - DOES GOD EXIST? TODAY

July 25, 2024July 23, 2024

Smalltooth Sawfish “Pocket Protector”

An interesting creature lives in the ocean off southern Florida and the Bahamas. The smalltooth sawfish (Pristis pectinata) is a member of the ray family with a snout lined with needle-sharp teeth that it can use to cut vegetation or chop up a predator that gets too close. The amazing thing about this fish is that the babies are live-born. The question is how can a baby sawfish avoid cutting up its mother or siblings before birth.

The answer to that question has come from researchers at the Florida Fish and Wildlife Conservation Commission in Charlotte Harbor. They found that the baby sawfish’s teeth are housed in a sheath during its life inside the mother. It’s essentially a second skin that the smalltooth sawfish sheds about four days after birth. The researchers say the sheath feels like paraffin wax, which you can’t peel off, but with a slight give. The chemical composition of the sheath shows that it has two layers made of proteins similar to ordinary skin.

The ocean is full of living things with incredibly complex and specialized designs, enabling them to exist in unique environments. The lead researcher, Gregg Poulakis, said, “It’s a cool thing Mother Nature figured out to protect mom from those calcified teeth and protect siblings from sword fighting in the uterus.” Trying to explain such design by gradual evolution requires intermediate steps leading to the design features we see today. Those intermediate steps do not exist.

Every discovery speaks of an intelligence that filled in ecological niches and survival techniques like what we see in the sawfish. Romans 1:20 tells us that we can know God exists through the things He has made. The number of examples of cases like the smalltooth sawfish continues to grow as science learns more about the complexity of the world in which we live.

Reference: Science News magazine for July 13, 2024, page 5 and sciencenews.org

July 17, 2024July 16, 2024

Trout Fins Are Designed for Efficient Swimming

Technology has allowed us to see the design of things in the natural world. Dr. Haibo Dong at the University of Virginia has used 3D computer models to study the turbulence created with each fin of a trout. American Scientist magazine states, “Interactions between swirling eddies created by a swimming trout show how its body is optimally laid out for energy-efficient movement.” Trout fins are designed for efficient swimming.

A trout’s body is shaped to swim through the water with less drag than any other shape. However, the role of various fins is not easy to see. Virtually all fish have a dorsal fin on the back and a caudal fin on the tail. Trout have other fins, including pectoral fins near their heads and pelvic fins near the center of their bellies. Toward the back of the trout’s body is a small adipose fin on top and an anal fin on the underside. The researchers have shown that the fin locations increase the thrust the tail produces. The anal fin produces 8.6% more thrust reducing the drag by 18.6%. Trout fins are designed for efficient swimming, or as the researchers conclude, “the whole trout is optimized for efficient swimming.”

Other fish have different fin arrangements to match their survival needs. A tuna living in the open ocean has a different layout of fins because it is designed for speed rather than efficiency. Fish that confine their existence to the bottom of a lake or river will not have the same fin layout as the tuna or the trout. For example, catfish have a fin arrangement designed for protection. Those of us who have grabbed a catfish incorrectly may have suffered a painful jab from its fins. Trout fins are designed for efficient swimming since they make long migrations, swimming upstream and sometimes over waterfalls.

Our technology allows us to understand the various designs seen in living things. Trout fishermen know that catching a trout differs from catching any other fish because of their mobility and muscular nature. Research has shown that the trout’s design shows wisdom right down to the shape and location of its fins. We suggest that this design is the product of a Designer, not just blind opportunistic chance. Genesis 1:21 tells us, “God created the great creatures of the sea and every living and moving thing with which the water teems..” Thanks to technology, we understand how over-simplified that statement is.

Reference: “Fins Working Together” in American Scientist magazine for July-August 2024, pages 204-206.

July 3, 2024July 2, 2024

Firefly Frequencies at Work

There are 56 species of flying lightning bugs, or fireflies, and each emits light of a different frequency. The different firefly frequencies cause different colors, such as green, yellow, or red, but science has found that the frequencies are far more precise than the color. The fact that each species has a particular wavelength allows fireflies to find mates, even in an area where other life forms use bioluminescence.

Fireflies have four stages. They begin as eggs but spend most of their 61-day existence as larvae, eating snails, slugs, and worms. They have a pupa stage just before becoming adults. Bioluminescence serves mainly as a way for males and females to find each other, and having the right frequency is essential in that process. Research is continuing on how the frequencies are specified, but 56 species means that the frequency variation has to be carefully created and controlled.

Most living things have methods of communication that serve multiple purposes. Communication allowing males and females to find each other is always risky because it exposes them to predators. Because fireflies’ flashing is sporadic and not a steady glow, they are less likely to be eaten. If you have tried to catch these flying lightning bugs, you know how hard it is because they flash and run, making them hard to locate.

We can learn many things by studying the natrual world, including the chemistry that allows various firefly frequencies of bioluminescence. In the firefly we see another demonstration of God’s wisdom and intelligence.

Reference: PBS “Nature” program on May 16, 2024.

July 2, 2024July 1, 2024

Animal Memory Capacity

One of the most interesting areas of study in living things is animal memory capacity. Memory is designed into animals to benefit both them and other forms of life in their ecosystem. We see a good example of partial memory in squirrels who bury massive numbers of seeds, such as acorns, but only remember where they put a fraction of them. What that means is that the squirrels have enough to eat, but they plant trees over a huge geographic area. There are many forms of life where partial memory serves a similar purpose.

On the other hand, some life forms remember virtually 100%. A good example of this is Clark’s Nutcrackers. They survive on pinion seeds, and a single bird may hide as many as 30,000 seeds, placing 4 or 5 seeds in each spot. Throughout the winter, the Nutcracker, when hungry, will return to each hiding place to get food. By the time spring arrives, this bird will have consumed almost all of the seeds hidden in thousands of different places.

It is interesting that different forms of life have different memory capacities that benefit not only themselves but also their environment. You could compare it to thumb drives for your computer, having different memory capacities depending on the thumb drive’s design. God has placed different storage in the memory of the brain of each creature He created. In humans, that storage capacity is huge and can be accessed in many ways. In the animal world, there is an interaction with the environment that is beneficial to the animals and the environment.

Trying to explain this animal memory capacity by evolutionary reasoning is incredibly difficult and is full of assumptions. Those of us who believe in God as the creator understand why this kind of thing occurs over and over. It speaks of God and His wisdom and design in the world around us.

Reference: Our Fascinating Earth: Strange, True Stories of Nature’s Oddities, Bizarre Phenomena, and Scientific Curiosities by Dr. Philip Seff, Ph.D.

July 1, 2024June 29, 2024

One of the Natural World’s Most Amazing Things

The hummingbird is one of the natural world’s most amazing things. Researchers have compiled new hummingbird data using modern methods, including high-speed photography. An adult hummingbird weighs roughly 4 grams, and to get a handle on that, a penny weighs about 2.5 grams. There are 21 species of hummingbirds in North America, and one species, called the bee hummingbird, weighs less than a penny.

Hummingbirds don’t beat their wings as most birds do; instead, they rotate them in a figure-eight pattern. That allows them to hover and fly backward or even upside down. The rate of wing motion is up to 80 cycles per second. That is within the range of human hearing and explains the humming sound that gives these birds their name. The metabolic rates of hummingbirds are amazing, as their heart rate is around 1,260 beats, and their breathing rate is 250 breaths per minute. These rapid rates mean hummingbirds may find a place to rest as often as every 15 minutes.

One of the natural world’s most amazing things is that hummingbirds can travel non-stop across the Gulf of Mexico in spring and autumn. Before embarking on that trip, they double their body weight with nectar and insects. When the temperature is low, they go into hypothermic torpor to survive.

The hummingbird’s eyes have a dense concentration of cones in their retinas containing pigments that act as filters to heighten color sensitivity to red while muting blue. Pollination is a major purpose of hummingbirds. Ruby-throated hummingbirds deposit ten times as much pollen as bumblebees, and their life expectancy is 3 to 6 years.

It is with great joy that I watch hummingbirds come to the feeder outside my office window. Their various characteristics speak of the wonder of God’s creation, defying chance explanation. Once again, we “can know there is a God through the things He has made” (Romans 1:20). The hummingbird is one of the natural world’s most amazing things.

Reference: “Fascinating Hummingbird Facts” by Tom Warren on Almanac.com

June 27, 2024June 24, 2024

Brown Bats and Tiger Beetles

One of the challenges in the natural world is keeping a balance between predators and victims. If predators have a foolproof method of locating their prey, they will eventually wipe out their food population, and the predators will die. That means victims must have some method of avoiding predation. Harlan Gough, a conservation entomologist at the U.S. Fish and Wildlife Service, has done some amazing experiments with brown bats and tiger beetles.

When Gough placed brown bats and tiger beetles into a cage together, the bats ate all of the tiger beetles. In the wild, this doesn’t happen because tiger beetles have a way of mimicking an insect known as a tiger moth. Tiger moths live in the same areas as tiger beetles, but bats don’t eat them because they have a foul taste. Dr. Gough found that tiger beetles can emit the same clicks as tiger moths when they sense predatory bats. They pull their forewings into the path of their beating hind wings, creating a high-pitched click similar to the tiger moth’s sound.

In the natural world, all living things have one or more methods to avoid predators. It may be smell or sight, but this may be the first case of using sound to deter predation. Realize that all of this happens at night when ultrasonics are more useful than sight and smell. No prey survival methods are 100% sure, so predators can still survive, especially when the food source is injured or sick.

We suggest that this case of brown bats and tiger beetles is another instance where there are too many variables to assign to chance. Having tiger moths with bad taste living in the same Arizona desert with tiger beetles seems more likely to be a planned and designed system than a series of accidents. The statement in Romans 1:20 that “we can know there is a God through the things He has made” seems to be supported again as we learn more about the functioning of the natural world.

Reference: Science News, June 15, 2024, page 11.

June 25, 2024June 24, 2024

Surviving the Heat

We are bracing for the hottest summer on record globally. Humans have interesting ways of surviving the heat, although people do die from it. In the wild, we see ways that animals are designed to withstand heat, drought, and water issues. Here are a few examples:

SAUDI ARABIAN GAZELLES. When the temperature increases, the heart and liver of these animals shrink, and breathing slows, reducing the water lost with each breath.

STORKS and some other birds cool down through urohidrosis. The stork urinates on its scaly legs, and evaporation enables it to lower its body temperature in high heat conditions.

NAMIB LIZARDS AND BEETLES climb a dune to get high enough to be in the early morning fog. The beetle will do a handstand, sending moisture down its back and into its mouth. The lizards simply open their mouths and gulp in the mist. In both cases, they cool their bodies while obtaining water.

JESUS LIZARDS get their name because they walk on water. To accomplish this, they have long toes on their rear feet with fringes of skin that unfurl in the water, increasing their surface area. They slap their splayed feet hard against the water as they rapidly move their legs, creating tiny air pockets to keep them from sinking. This not only lets them escape predation, but it also cools the lizard as the water evaporates from their legs and feet.

We are all familiar with dogs and other animals panting to cool themselves. The point is that animals, and even plants, have methods for surviving the heat. Humans sweat to cool our bodies by evaporation. Humans are also the only ones with the ability to change our environment. We need to learn from the animal life God created and adjust how we live and what we do to protect our climate.

Reference: Natural History magazine November 2007.

June 21, 2024June 18, 2024

Qiviut Fiber and the Muskox

One of Earth’s warmest, finest, and rarest fibers is not produced by humans. Qiviut is the Inuit language name for the coat of the muskox, which is native to Alaska. Muskox qiviut fiber is lightweight but stronger and warmer than sheep wool. The muskox wears its two-inch-thick coat throughout the winter and sheds it in the spring. Researchers are making a major effort to create a synthetic fiber that is even close to what the muskox produces.

Muskox inhabit the tundra of northern Alaska, where winter temperatures drop far below zero, and the wind is constant and substantial. Most animals migrate to warmer areas or hunker down into dormancy to wait out the cold tundra weather. The muskox will paw through the snow to reach moss lichen, willows, and roots while ignoring the typical blizzard conditions.

Alaskan farmers raise herds of muskox and ship qiviut to a mill that spins it into yarn. Qiviut is a challenge to spin because it has a tiny diameter, short staple length, and is smooth and slippery. Sheep wool is coarse with deep interlocking scales, making sheep wool yarn strong, but it also causes shrinkage, felting, and scratchiness. Qiviut is sometimes blended with silk.

Interestingly, human work with fibers of all kinds for thousands of years has not come close to the qiviut fiber of the muskox. God’s design of materials for every type of climate and condition speaks loudly of His wisdom and design. The muskox is an excellent example of fiber design not seen in any other life form on our planet.

Reference: Alaska Magazine for July/August 2024 pages 64-67.

June 13, 2024June 10, 2024

Coordinated Vigilance

Research shows that rabbitfish in Australia’s Great Barrier Reef forage for food in pairs using “coordinated vigilance” to avoid predators. The rabbitfish take turns foraging for algae in reef crevices while the partner is on guard duty in “an upright vigilance position.” Researchers said, “Both behaviors are strongly coordinated, and partners regularly alternate their positions.” The researchers say this reciprocity is “thought to require a suite of complex cognitive abilities.” In other words, how could fish that “lack complex social and cognitive skills” have evolved this system?

Scientists have studied cooperative behavior in some mammals and a few birds. Teamwork in fish is almost nonexistent, but God has placed this unique genetic value in rabbitfish. This is especially interesting when you look at humans. In Genesis 2:18-24, God created a helper for Adam. The Hebrew word “ezer” used in these verses does not indicate that woman is inferior to man or of lesser importance. The idea is that a woman can do what a man cannot do for himself. Like the rabbitfish and other life forms, coordinated vigilance is built into the genetics of various living things to allow them to survive.

The New Testament passages Ephesians 6:4 and Colossians 3:21 indicate that fathers have a role to play in the family in relationship to children. The concept is that God intends for coordinated vigilance with husband and wife to be the foundation of the family. In human societies, when coordinated vigilance is not practiced, the whole structure of culture falls apart. This does not bode well for societies around the world today.

Our nation’s violence and struggles will only get worse as society distances itself from God and His instructions. We promote the Bible as the word of God because the evidence shows that when people follow biblical instructions, society works. When people fail to follow them, the culture disintegrates.

Reference: nih.gov

June 12, 2024June 10, 2024

Monarch Butterfly Migration

Some people have asked questions that show confusion about monarch butterfly migration. The idea that one butterfly migrates from northern latitudes to Mexico and back is incorrect. The monarch’s life begins in March and April as eggs on milkweed plants. They hatch into tiny caterpillars in about four days. After two weeks, the full-grown caterpillar will attach itself using silk to make a chrysalis. In about ten days, a butterfly will emerge and fly away. The butterfly will feed on flowers and fruit for two to six weeks. This first-generation monarch will die after laying eggs for the second generation.

The four-stage life cycle of the second, third, and fourth generations is the same as what we just outlined, but the fifth generation is different. The fifth generation is born in September and October, but the butterflies don’t die after two to six weeks. They complete the monarch butterfly migration to warmer climates in Texas, California, and Mexico. There, they hibernate for six to eight months, and the whole process starts again.

We have talked about hummingbirds, where one individual makes the journey from northern areas to subtropical climates. In the case of monarch butterfly migration, the journey involves five generations. How they make such a journey with five individuals who never see each other is the object of several studies. It seems rather obvious that their DNA has a built-in GPS, allowing this incredible journey. No one would suggest that a GPS is a product of blind mechanistic chance. There has to be a design to enable such a system to work. That design is the product of an intelligence that is not only built into the GPS but also the instructions for what to do in each of the four steps of this remarkable insect’s life.

God is the designer of the monarch butterfly migration system, and the design features we are coming to understand reflect God’s wisdom and purpose. What a great time we live in, to be able to understand the complexities of life and yet know there is still much for us to learn.

Data from Old Farmer’s Almanac