For now we go to an almost entirely aquatic creature the Dense Ocean Snake (DOS). The only completely limbless species on ON most biologists would assume it has a distinct disadvantage especially in the case that the creature is a carnivore, which it happens to be. Fortunately for it and unfortunately for a large number of the denser sea dwelling fish its great size, generally well over 100 meters long and 15 wide, and unusual agility makes it an extremely dangerous predator, this partnered with its teeth sharp enough to tear through hardened steel make it dangerous even if it were to come on land. Luckily for all the mammals save the Seebolit it has either no interest or ability to come on land (this information is unknown because no thorough biological study has been done as of writing this report). However, with the Seebolit the DOS has developed a fierce rivalry which has forced the mammal to stay to the lesser density waters for its prey. Between each other there is a tense rivalry as well, while they are not particularly territorial in the traditional sense certain schools of fish seem to be watched over until they reach maturity by certain Seebolit. An additional oddity of the species is their birthing process, all Seebolit are self reproducing and while they protect their young fiercely, at their coming of age (around 115 standard annum) the younger generation must fight the older to death and thus take over their responsibility of looking after the school/s their progenitor once did.