Leeran

The Leerans are a fictional race of aliens from the Animorphs series by K.A. Applegate. They are described as a yellow amphibian species with tentacles for arms that resembles a manta ray or frog. They live in the vast oceans on their homeworld, Leera, which has only one small continent of land (originally, Leerans needed to go on land to mate, but technology now makes that unnecessary). Leerans have advanced psychic powers, which makes them very desirable Yeerk hosts. However, their telepathy also makes it impossible for the Yeerks to invade the leera homeland secretly and silently as they have done on Earth. For this reason the Yeerks intended to create versions of Earth sharks with brains large enough to be infestable to serve as underwater shock troops on Leera, but their plan was foiled by the Animorphs. Due to their psychic powers, Leeran-Controllers are able to see past the Animorphs' forms and discover that they are human.