Marine mammals can actively control gas exchange during a dive.

Pilot whales are referred to as the “cheetahs of the sea” due to fast, shallow diving.

How does body size generally relate to aerobic dive limit across species?

Why is blubber considered more than just fat in marine mammals?

Marine mammals can shut off blood flow to extremities like flippers to conserve heat.

Extended lactation periods are characteristic of species like manatees and some whales.

The sperm whale’s spermaceti organ helps with buoyancy, not echolocation.

How do the vocal folds in baleen whales differ in orientation compared to their ancestral terrestrial relatives?

Most marine mammals exhibit spontaneous ovulation rather than induced ovulation.

All cetaceans have prominent external ears to aid in hearing underwater.