Water.
A guinea pig water feeder or a water bowl.
The ducklings will die as they will not have any water to drink and no fish to eat, and they could not go to another pond as they don't know how to fly.
The whale shark is a filter feeder which, like baleen whales, eats small organisms such as krill, that it filters out of the water. Of course like all oceanic life, it drinks sea water.
No they do not. They generally swim using A backwards FORCE. :) Ducks do not, but ducklings do. I have seen small ducklings that were swimming with the mom and somehow fell behind. He got so scared that he literally ran on top of the water to catch up with the group.
gravity
A filter feeder is an animal that that cleans out the bottom of the ocean or fishboll. A kind of fish is a filter feeder. NO - you're thinking of a scavenger - A filter feeder eats plankton and other small particles in the sea. They pull water through their body, straining it for food - push the water back out and eat any solids found.
They drink from small pools of water or streams.
They eat if you put bread in water they will eat it.
A whale shark is a filter feeder; it sifts plankton and small shrimps from the water it swims through.
When they are small pups, mother's milk. After that, water.
He drinks water from this small pool