What are the adaptations of animals hunting in water for food?

Answer 1

Fishes have gill pouches for the water to flow out of their mouth and food particles will retain. Water birds like ducks and swan have long beak with teeth like structures to catch fishes as their food. Whale has strong fins to kill the other water animals.

Answer 2

The adaptations of animals hunting in water for food is vast. These animals have developed powerful tails and strong jaws.

Answer 3

It depends on the species.

The platypus has webbed feet with a retracting webbed membrane which can expose the claws, enabling the platypus to effectively dig burrows into riverbanks for shelter. The webbing membrane retracts for that purpose, but spreads between its toes when it needs to swim - which it needs to do to get its food. The platypus can remain underwater for between one and five minutes. Its bill has sensitive electroreceptors which pick up tiny nerve and electrical impulses generated by crustaceans and other animals that inhabit the bottom of the creek or river. The platypus then uses its bill to shovel away the dirt, and find the food. It does not have teeth, but hard bony plates which it uses to grind the food.

Many mammals such as platypuses, otters and beavers have thick, waterproof fur. Platypuses and beavers have flat tails which act as a rudder in the water.

Marine mammals have various adaptations as well. Dolphins and whales, for example, have a different fin shape: their tails go up and down to help them dive up to get air (compared to a fish's back fin which moves side to side). The shape of their fins also helps to propel them through the water. To help dolphins and whales save oxygen while they dive underwater, their heart beats slower during a dive and their blood is diverted from other parts of the body to their heart, lungs, and brain. They also save oxygen via their muscles, which have a protein called myoglobin, which in turn stores oxygen. Dolphins and whales have blubber, or fat, which provides insulation, helping the dolphin stay warm in cold water. Blubber also serves another function, streamlining the body for better speed in the water. Marine mammals breathe with lungs rather than gills, so they breathe from a blowhole which closes before the dolphin goes into the water, so water will not enter the blowhole. Many species have well developed echolocation, by which they locate other animals and objects in the water. It is also how they communicate with each other.