The Longfin Mako Shark

Almost as rare as the megamouth, the longfin mako shark is found in the deep sea, near to six hundred metres below the surface, in the Atlantic, Pacific and Indian oceans and the Mediterranean Sea. Sadly, they do not tend to stray as far as Britain. Despite being very rarely seen and one of the most little known about sharks still in existence, they are nonetheless truly fascinating creatur
  There have been no recorded attacks on humans by longfins, as they hardly ever mix with the creatures of the Sunlight Zone. Their diet consists of small fish, diamond squid and deep sea jellyfish, this mix of food leaves them smaller than other sharks, but a sustainable meal in the Twilight Zone and Dark Zone where they live is very hard to come by. However, this lack of food may just give them the edge over the sharks of the Sunlight Zone when it comes to hunting. Their senses are sharpened by hunger and when they have to find their food, they rarely fail.
  So we have covered the prey of the longfin, but now we turn to the predators. With the absence of killer whales and omnivorous, cannibalistic sharks such as tigers, great whites and bulls, the longfin mako shark has only two predators: deep sea fishermen and the majestic and mysterious giant squid, terroriser of the deep sea and ruler of the dark water. They kill with silence and without mercy. As with most of the creatures from the Dark Zone, they are not fussy and eats whatever it finds. Longfins are no exception. Their powerful petorcal fins (which give them their name) and sharp teeth are no match for the giant squid's tentacles, suckers, unimaginable strength and sheer size. As was mentioned above, deep sea creatures are not fussy. This makes them easy prey for fishermen who only have to drop their lines baited with rich, Sunlight Zone fish such as tuna and chum for many unsuspecting, malnourished fish (and evidently sharks) to come knocking.