I can't fucking believe it...but I actually found a picture that's close! Not my art, all credit goes to it's creator.
Habitat: Oceans. (Typically warmer waters)
Disposition: Greedy, bold, ferocious, lustful.
Diet: virtually anything.
One of the most famous species, the Water Jinko is characterized by the dark stripes covering their tails, resembling a Normal Jinko, hence the name. Curiously, they also possess Cat-ears on the top of their head, even though they really don't serve much of a purpose beyond a sensitive zone(See below) A Water Jinkos can be found nearly anywhere throughout the oceans, However you're most likely to find most of them in the warmer seas around the tropics.
Water Jinkos are possibly the ultimate gluttons: being able to eat nearly anything. Metal, waste, they can and will eat it all. For this reason it's often wise to not leave something important near them, as they might try to get a "bite" out of the object. For them food is usually the first thing on their minds, and they'll do anything for food. Usually the way people tend to befriend them is to simply feed them. Just one hand out is enough to make the Water Jinko consider you a friend for life. While in most cases such gluttony would lead to weight issues, they sidestep this by being constantly being on the move, Sometimes even following ships to get their exercice AND try to get handouts.
While the Water Jinko's desire for food knows no bounds, their desire for a mate is almost as strong. From a young age, they're taught that men's semen tastes better inside them than any food they could ever taste, so when an unmarried man comes near one, be it they are walking on the shore or swimming nearby, they will stare at him hungrily like any meal. Should he get close enough they will attempt to grab him and initiate mating, often initiating the attack with them jumping to him and kissing, or even sucking off his manhood right off the bat, once either of these happens there is no escape.
When mating they use their entire bodies to taste the man, not letting a single drop of his semen escape them, be it entering their mouth or vagina. They will continue to do this until they feel that they've had their fill. It is possible to turn the tables on them however: should the man for whatever reason touch their ears, they immediately go delirious from pleasure and become totally submissive, letting the man do whatever he wants to them. It is during this time that they finally decide that they've found their favorite "meal" and decide to make the man their husband: the only man they'll ever need to feed on ever again.
After mating a Married Water Jinko will always be looking for food like normal, but they always take some back to their beloved husbands. They always expect him to eat whatever they've brought, and should he not, they often puff up their cheeks and sulk for a bit. They will stay like this until thir husband either eats whatever disgusting thing they've brought, or pounces on them and starts to mate with them, should he do the former the Water Jinko will often be more loving than normal during this, often happy beyond belief that their husband is so willing to make them happy.
Oddly: When Harpies enter their mating season, Water Jinkos curiously seem to enter heat as well. Should one of these Lust-ridden Harpies come near or on the water, the Water Jinko will attack them and pleasure her. if the Water Jinko is unmarried: the two will become a sort of duo, searching for a man together: with the Harpy often leading a man to the shore for the Water Jinko to trap. Should the Water Jinko be married however: she'll take the Harpy to her husband: "Usually saying something along the lines of: "I found this poor dear all alone and hungry, you should fill her up like you do me!" It is not unheard of for a Water Jinko to inadvertently bring her husband a harem of Harpies over several years of doing this.
(Well, I figured I had to do the second most feared shark after the Great White. The Harpy part stems from Tiger sharks regularly stopping by an island during An Albatrosses breeding season, feeding on any unlucky adults or chicks. Due to urging from a friend I decided to give them cat ears. I hope you all like them. Please leave thoughts and worthwhile criticism down below.)
(Upcoming: Wobegong, Frilled)