/jp/ - Otaku Culture

>>26861873
She's just sleeping, be patient

It was once believed that all sharks had to swim constantly in order to breathe and could not sleep for more than a few minutes at a time. Oxygen-rich water flows through the gills during movement allowing the shark to breathe.

While some species of sharks do need to swim constantly, this is not true for all sharks. Some sharks such as the nurse shark have spiracles that force water across their gills allowing for stationary rest.

Sharks do not sleep like humans do, but instead have active and restful periods.

https://twitter.com/gawrgura/status/1305303364247392256

>>26273131
ok