Question

what are sessial filter feeders?

Answer 1

HEY MATE HERE'S YOUR ANSWER ;

Sessile means "permanently attached" typically under water to the seafloor.  They can not move which is a significant challenge in terms of predators and obtaining food.

Filter feeders are animals that eat by filtering/straining food floating in sea  water.  Often there is a larva stage of reproduction when they are not sessile but are mobile and float around in the ocean.

Answer 2

Sessile means "permanently attached" typically under water to the seafloor. They can not move which is a significant challenge in terms of predators and obtaining food. Filter feeders are animals that eat by filtering/straining food floating in sea water.