World’s Deepest Diving Mammal

Recent studies of the Cuvier’s beaked whale, also known as the goose-beaked whale, have established that it is the world’s deepest diving mammal.

Cuvier’s beaked whales dive to feed on squid and fish near the ocean floor. Researchers monitored the whales diving as deep as 2993 meters (about 1.9 miles) and staying down for more than two hours. The mean depth of the deep dives was 1400 meters for more than an hour. For example, the pressure on the whale’s body at 1800 meters (almost 6,000 feet) is 2,600 pounds per square inch (17,926 kPa). Human divers can only stand about 173 pounds per square inch (1196 kPa), which is a depth of 400 feet (122 m).

On average, these whales hold their breath for over an hour, and yet when they return to the surface, they can be ready for a shallow dive again in as little as two minutes. They tend to alternate between shallow and deep dives with the average time between deep dives being about 100 minutes. The design of the whale’s body that allows survival in these extreme environmental conditions is a subject of scientific research.

There is also the question of why they go to such extremes when the same food is available closer to the surface. One interesting aspect of the behaviors of all animals is their role in maintaining balance in the ecosystem. Like all other environments, the deep ocean needs predators to keep a balance between deep ocean life-forms and their food supply. As science begins to explore the deepest parts of the ocean, we see that there is a whole ecology that keeps life in balance. Cuvier’s beaked whale, the world’s deepest diving mammal, is part of that designed system which indicates a Designer.
— John N. Clayton © 2019

More information on the research is available on PlosOne at this LINK.