All animals have a purpose
sea urchins :)
it helps them live...
Yes. All animals balance the ecosystem.
No. They are an important native species there.
The plural of otter is otters.
to keep the blood, heat and guts in place,
No type of otter eat seaweed in any important amount. Otters are carnivores, meat eaters. They eat fish, shellfish and crustaceans.
No, male otters do not drown female otters during mating.
There are sea otters and other otters. In the category of "other" otters, you can include the North American River Otter, Giant Otter of South America, Asian small clawed otters, Congo clawless otters, Capr clawless otters, Southern river otters, hairy nosed otters, spot necked otters, neo tropical long tailed otters, and others I may fail to mention.
Otters
Otters.
mostly river otters, sea otters and other types of otters.