Marine Life

You'll spend most of your dives looking at things that don't care you're there. This is the biology behind the animals you meet, with the data rather than the folklore. The shark article is the one to send to nervous relatives.

Filter:whale physiology

August 26, 2026
4 min read

How Do Whales Hold Their Breath for Over an Hour?

Some whales can hold a single breath for nearly 4 hours. Here's how myoglobin, bradycardia, and collapsing lungs make it possible, and why the trick doesn't work for scuba divers.