Sea The Difference: Cassiopeia, an Upside-Down Jellyfish

  • Written by CSA Ocean Sciences
  • Published in Blog

Groups of Cassiopeia jellyfish are commonly found upside-down on the seafloor, with their tentacles extending upwards into the water column above.  These jellyfish, like corals, contain algae in their tentacles and turn upside-down to expose the algae to sunlight. Sometimes, however, they are seen pulsing to move, as shown in this photo taken by CSA staff offshore Key West. 

Stay Connected