Your ultimate digital encyclopedia for the world's most charismatic semi-aquatic mammals.
Otters are carnivorous mammals in the subfamily Lutrinae. There are 13 extant otter species, all semi-aquatic, aquatic, or marine, with diets based on fish and invertebrates. They are known for their thick fur, playful behavior, and incredible swimming abilities.
The heaviest members of the weasel family, often seen floating on their backs in kelp forests holding hands so they don't drift apart.
Found in South America, these "water wolves" can reach up to 1.7 meters (5.6 ft) in length and are very social and vocal.
The smallest otter species in the world, known for their dexterous paws which they use to find mollusks and crabs.
Pocket Power: Sea otters have a loose patch of skin under their armpits that acts as a pocket to store their favorite rocks for cracking open shells.
Insulation: They have the densest fur in the animal kingdom, with up to one million hairs per square inch.
Social Groups: A group of otters on land is called a romp, while a group in the water is called a raft.
Twelve out of the thirteen species of otters are currently declining. Habitat loss, water pollution, and the illegal pet trade are major threats. By supporting clean water initiatives and wetland conservation, we can ensure these playful creatures thrive for generations to come.