Add Yahoo as a preferred source to see more of our stories on Google. Fish are diving into manta rays’ rear, and the rays are, perhaps unsurprisingly, not thrilled about it, according to new research.

Remoras are often called “suckerfish” because of the suction cup-like organ atop their heads. It allows them to stick onto marine animals like whales, rays and dolphins so they can travel as ...

After reviewing more than a decade of underwater footage, researchers have documented remoras, the suckerfish famous for hitching rides on larger animals, diving into the cloaca of manta rays.

Small fish clinging to sharks, whales, and rays for a free ride have long been seen as the ocean's harmless hitchhikers. But research suggests remoras may be doing far more than freeloading, including ...