animal sleep habits, rare animal discovery, sperm whales, sperm whales sleeping vertically, whales

An Amazing Discovery: Sperm Whales Sleeping Vertically

Imagine being a diver and coming across a group of sperm whales sleeping vertically, not swimming like dolphins and porpoises, but floating upright and motionless in the open sea. If you ever witnessed such a scene, congrats, you have seen a very rare sight. Sperm whales sleeping vertically: A rare sight Back in 2008, a ...

Armin Auctor

Sperm whales.