There are both freshwater (river otters) and salt water otters.
they live in salt and fres
River otters live in the shores of fresh water regions. River otters live on river shores. River otters hold there breath when going under water. They also use sticks and branches to build a dam in the water.
yes because if there was no any there will only be herbivore in the fresh water
Because they need some of the bacteria in the salt water to live. the fresh water doesen't provide the certin bacteria that the other water has.
Yes. Otters live in and around water. They're aquatic and they are found in both fresh and salt water. About a dozen different species inhabit the planet. A link can be found below for more information.
lots live in water like fishes and sea mammals (otters, seals, dolphins, sealions,whales. i.e) but it depends on what water it is, fresh or sea (salty)
In the water
Otters are a semi-aquatic mammal. So they don't live exclusively in water.
There are algae, corals, seaweed, etc., etc.,etc.
In the water
because there are nocturnal
Otters live in water, in dens or nests. In winter, when an otter's den or nest freezes over, the otter will look for a new river to live in. P.S. Otters nest's live on top of water or along river banks.