dolphins and whales
The killer whales mouth is armed with sharply pointed teeth.
Those hairs are called mustache.
Whales have tiny hairs on their backs, and mammals have to have hair to be classified as mammals, and fish CAN NOT have hair.
in their mouth and back and bottom of mouth
Whales do have hair: at least the young of some species have some vibrissae-like hairs on their snout (and even when these hairs are lost, the sensory terminals associated with them remain).
dis is so because , breathing by nose removes all dust particles due to the hairs, but whereas mouth does not have any hairs.
== == Baleen Whales
Whales eyes are situated just above and behind the gape of the mouth.
Baleen Whales eat krill using the Baleen in their mouth.
It has trigger hairs in its mouth that help it to catch its prey!
Whales that eat plankton have things called baleen plates. They are fleshy plates covered in hairs. the whale approaches the swimming plankton with an open mouth and then closes its mouth. The whale then pushes the water out with its tongue while the baleen traps the krill. The whale then consumes the krill without having to swallow all of the seawater. Some whales do and some whales don't like the killer whale eats meat and other fish etc but whales for example the blue whale only eat plankton.