Pacific angel shark
At first look, this shark seems like its cousins—rays and skates—with its planate body and enormous pectoral fins. however in contrast to those animals, associate angel shark’s pectoral fins aren’t entirely connected to its body, its gill slits wrap round the facet of its head and it's an outsized mouth before (rather than on the lowest of its head). associate shark conjointly has associate uncommon tail fin—the lower lobe is longer than the higher lobe. Most sharks’ tail fins look additional high serious.
An shark spends its day buried within the sand, absolutely invisible by its grey, brown and black coloring. It lies there in ambush, expecting little fishes to swim at intervals gulping distance. once associate unsuspecting fish comes close to, the shark lunges upward, sucks the fish into its immense mouth and swallows it whole.
Before 1978, angel sharks were sometimes thrown back once caught. however this modified dramatically once a Santa Barbara fish processor determined to push the shark as a tasty morsel. when a slow begin, the shark became thus standard that the 366 pound (166 kg) catch in 1977 accrued to 350 tons (318 metric tons) in 1984. As a result the population of angel sharks speedily diminished. currently there ar limits on the minimum catchable size for angel sharks, and gillnet fishing is prohibited inshore of 3 miles (4.8 km).
To get enough water flowing over their gills, some sharks—like hammerheads—must swim to breathe. However, most bottom-dwelling sharks, like angel sharks, have muscles that pump water over their gills and thru spiracles (holes) in their heads. this permits bottom-dwelling sharks to snooze quietly on the lowest or wait in ambush for prey while not moving.
Even though bottom-dwelling sharks ar sometimes mild, memorizing what seems to be a ray or a dead shark may be dangerous. The shark can in all probability raise its head and quickly communicate a painful wound with its sharp teeth