Fish.
a dorsal fin is the one (or more) located on the back of a fish or aquatic mammal - its the fin that you see when a shark is swimming just under the surface of the water. Ventral fins are the ones toward the rear of the body and help in steering the animal through the water
The water comes through the incurrent siphon and gets flushed out the excurrent siphon
Water enters the mantle cavity through an incurrent siphon, and exits the mantle through an ex current siphon. This is a normal aspect of biology.
Squids and octopuses propel themselves by expelling water. They do this by keeping water in a cavity and then suddenly contracting the cavity to force out the water through an opening.
the central cavity
Water is brought through cilia-lined pores into the hollow cavity of the sponge. As water passes through the pores, the cilia trap oxygen to breathe
Cavity wall insulation is used to reduce heat loss through a cavity wall by filling the air space with a porous material. By doing this the porous material absorbs the escaping water and air.
flagella
Cavity wall insulation is used to reduce heat loss through a cavity wall by filling the air space with a porous material. By doing this the porous material absorbs all of the air and water and stops it from escaping the house or building.
It is drunk by the animal or human and goes through its body.
They drink water through their anal cavity whilst scooping fish with their bear-like paws,Marvelous,adaptable creatures. I hope my answer was of use to you.
uptake of water and select ions... "drinking"