There are 13 types of otters found by and large around the world. Some otter species live entirely in the water while others are land and water-based species.
Sea otters can stay under water for 5 minutes, and river otters can hold their breath for even longer – 8 minutes!
Otters reach swim speeds of up to 7 miles per hour. This pace is three times faster than the average human swimmer.
The average life span of the river otter is 10 to 15 years in the wild, but can live up to 25 years in captivity.
They have a thick fur. Sea otters lack any blubber, so their thick, dense water-resistant fur keeps them warm.
Sea otters sleep at sea, floating on their backs on the surface. They often sleep in strands of kelp which keeps them from drifting.
Otters are the one of the mammals that use tools. They use rocks as a hammer to open hard-shelled food.
All otters eat 20-33% of their body weight each day. They spend around five hours each day foraging.