Dolphins because water is often murky. Light doesn't travel far below the surface.
Bats because they've evolved to be nocturnal when they're less threatened by predators and have plenty of prey for themselves.
Bats and Dolphins both use sound to navigate.
bats and dolphins use sound refraction to hunt for food. the bat is blind so they have to use sound refraction.
dolphins cant swim
Bats, dolphins, Whales, shrews, flying squirrels use echolocation.
There are many animals that use ultrasound. Some of these anmimals include; cats, dogs, dolphins, mice, fish and whales. the can use it to detect their prey
by using echolocation
Bats use their sense of hearing to find food. They use echolocation similar to dolphins.
Bats and toothed whales (dolphins, porpoises, killer whales, sperm whales, and river dolphins).
they both use ecolocation to see and hear
they both use echolocation and they are both mammals
There put their butts in the air
Dolphins and bats both produce very high pitched sounds and have excellent hearing. The sounds bounce off of objects, creating a very faint echo, which is effected by the objects in the surrounding environment. Dolphins and bats hear this echo, and their brains formulate a mental image of where objects are, there shapes, their sizes, etc. Both dolphins and bats use this for navigation and to detect prey.