Found in the North Atlantic, South Africa, Bermuda.
Gulp! How would you like an extra belly? The Black Swallower has developed an additional gut attached to its stomach, which allows it to ingest spiny fish whole and regularly consume prey that is twice its length and ten times its mass! Sometimes it gets a little greedy: black swallowers have been known to rise to the surface by releasing gases resulting from the decomposition of fish too large to digest quickly enough. This might well be due to the food scarcity in the mesopelagic and bathypelagic oceanic depths that the Black Swallower calls home, between 600 and 2,7645 metres under the sea.