Swell Shark - Cephaloscyllium ventriosum
Cephaloscyllium ventriosum is a species of catshark (Carcharhiniformes - Scyliorhinidae), aptly named the Swell Shark due to its ability to swallow large amounts of water, swelling its body to twice its normal size, when threatened by a potential predator.
It is a little known nocturnal benthic and epibenthic species with a disjunct distribution in the Eastern Pacific, from California to southern Mexico, and off central Chile. As a nocturnal predator, the swell shark feeds primarily on small reef fishes as well as any prey items that it can easily fit in its large mouth.
Photo credit: ©Walter Chung | Locality: Boundary Wall, San Diego, California, US (2013)