An curved arrow pointing right. On a recent expedition in the Mariana Trench, NOAA's Okeanos Explorer team spotted this sea cucumber and the unique way it swims. Produced by Grace Raver Footage ...

Sea cucumber can breathe through their cloaca by pumping water in and out of it. The pumping of water can also help them swim better. They can also eat with their cloacas. The cloacas can help ...