Do seals sleep while swimming?

Scientists discover that short naps at predator-free depths help northern elephant seals survive living out in the ocean.

How do elephant seals sleep? Part 2

Keeping seals safe – Outdoor Swimming Society Outdoor Swimming Society

March: Catastrophic Molt: It's Not As Bad As It Sounds (U.S. National Park Service)

Seals who sleep with half their brains help explain how humans snooze

Harbor Seal Facts - NatureMapping

Seals, life and facts

🟣 Relaxing Seals Swimming Underwater with Sleep Music

Hawaiian Monk Seal

The Delightful Harbor Seal

How Seals Sleep Pets on Mom.com

Elephant Seals Sleep While Diving Far Below The Ocean Surface - Natural Reserve System

Seal FAQ's - Seal Rescue Ireland