Cassiopea

Name: Cassiopea
Uploaded: 2020-09-09T01:29:05-04:00
Duration: 1 min
Channel: Nautilus
Description: Cassiopea, the upside-down jellyfish, are the most evolutionarily ancient creature known to sleep. CREDIT: Caltech

Cassiopea, the upside-down jellyfish, are the most evolutionarily ancient creature known to sleep. CREDIT: Caltech