Otters have strong tails to swim through murky water
this is know as lobtailing
Yes, sea otters communicate in many ways, such as making noises, rubbing noses, etc. Mother sea otters have special calls to their babies that are specific to each otter.
Often dolphins slap their tails on top of the water to frightening hiding fish into moving so they can find food. Dolphins will also sometimes slap their tails as a sign of annoyance or as a warning to predators or other dolphins.
they slap their tails
How big an otters tail really depends on which species you are referring to. Through the different species, the tails can range anywhere from 30 to 51 cm.
Otters have long tails to keep their balance.
There are both freshwater (river otters) and salt water otters.
If beaver sense there is danger near, they slap their tails against the water so other beavers know that danger is near, and you should get to safety.
Whales slap their tails on the water for communication, to warn predators, or to stun prey. It creates a loud noise that can be heard from far distances, helping them stay connected with their pod or alert others to danger.
River otters have much longer tails and a longer head than the sea otter. Sea otters have have large webbed hind flippers. When at the surface, river otters tend to swim on their bellies. Sea otters float on their back. River otters would be more likely to climb on a log or onshore to eat. Sea otters tend to eat their food in the water while floating on their backs, with the food on their stomach. River otters are on land frequently. Sea otters almost never leave the water. River otters tend to be all brown. Adult sea otters' heads lighten throughout their lifetime, becoming quite blond. In addition to the above, Sea Otters often gather in large numbers called "rafts" while river otters are more solitary and are usually only seen in groups of 4 or less (mom and pups). River otters can be found in streams, rivers and coastal salt water areas. This is in response to the answer below which is not correct. sea otters live in the sea otters live in rivers http://site1.wikianswers.com/templates/icons/qr.gif)" style="margin: 0px 0px 10px; padding: 0px">http://site1.wikianswers.com/templates/icons/qr.gif%29; background-position: right bottom; background-repeat: no-repeat; height: 22px">
No, that animal known as an otter cannot fly. There is, however, an aeroplane which is called an Otter which is seen flying in many locations around the world. Shipments of otters (the mammal) can take place using aeroplanes (including the "Otter") so otters (the mammal) can fly as cargo.