Other videos showed two species of cusk eel, Bassozetus sp. and Barathrites iris, swimming tail-first away from the camera ...

Additionally, many deep-sea fish have eel-like body shapes, which helps make backward swimming possible. The backward-swimming deep-sea fish typically measured between 1 and 2 feet in length and ...

Though a fearsome-looking creature, the pelican eel is only two feet long ... Here, surely, is good circumstantial evidence for deep-sea angling." ...

Actual data showed that the eels were consistently swimming toward the same direction both before and after noon. 05:38 At the time, the they were swimming in the deep sea at a depth of 400 meters.