Fish use gills, which extracts oxygen from the water.
Amphibians and whales breath oxygen, whales can hold their breath for hours at a time, explaining how sperm whales can hunt at great depths for periods of time.
Water proof fur covering!
Sea otters need food and fresh water to survive. They also need shelter for their pups and protection form predators in the wild.
the need fish to survive
No they do not. That's why they come up every once in a while. Mammals are animals that MUST breathe air to survive. All otters areammals
There are both freshwater (river otters) and salt water otters.
Yes they do survive in cold weather.
They need to have food (they prefer fish and crayfish, but eat what is available), water, and a good large habitat. river otters often die from pollution and/or loss of habitat.
Otters are mammals but they can swim and live in water.
sea otters excrete in water and on land
You seem to have confused otters with beavers.
Otters have fur because they need it to survive the cold waters of the Northern Pacific ocean and the Southern Pacific ocean.
Habitat destruction and water pollution are the main threats to otters.
Otters are a semi-aquatic mammal. So they don't live exclusively in water.
caminals watersnakes turtels and otters
only sea otters and it depends on the type of otter
In the water
Otters have very soft, insulated underfur, which is protected by an outer layer of long guard hairs. This traps a layer of air which keeps them dry and warm under water.
Otters will eat small mammals such as water voles and young rabbits.
Sea otters eat buts
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.
Otters are able to stay underwater for up to 8 minutes.
The temperature sea otters live in is 50 degrees or lower.
Otters live in the water so they are found in lakes, rivers and even the oceans.