How do aquatic animals filter out the water they swallow while eating, from the prey?

Question

how does it work?

In: 6

Answer 1

From watching my fish:

Step 1: inhale the food

Step 2: blast the water out of your gills

Step 3: chew on it for a while

Step 4: realize that’s your own poop and spit it out

Aquatic mammals push water back out through their teeth instead of gills. Baleen whales even have highly specialized comb teeth to catch even the tiniest creatures.