they both use ecolocation to see and hear
that they share a common ancestor
Bats, dolphins, and some fish.
Bats and Dolphins both use sound to navigate.
dolphins ,bats, and submarines all have echo location
I don't think dolphins and bats talk to each other much. Bats live on land and dolphins live out at sea.
dolphin sleep in ocean and in hear share
yes
Young children and certain animals such as dolphins, bats, and some dogs have the ability to hear the highest frequency sounds. As we age, our ability to hear high frequencies diminishes.
"sonar".
Dolphins are warm blooded like other mammals.
Most mammals do not have the ability to use echolocation. The mammals that do are bats and dolphins. They use it to navigate and locate prey even when it is difficult to see (for bats, that is at night and in caves, and for dolphins, it is useful in the water when visibility is reduced.
In general, being an albino has no effect on an animal's ability to mate.