Otters

lutrinae

Otters are charismatic semiaquatic mammals belonging to the subfamily Lutrinae within the diverse weasel family. Renowned for their playful behavior, high intelligence, and exceptional agility in water, these sleek carnivores inhabit a wide range of aquatic environments, from freshwater rivers and lakes to coastal marine shores across nearly every continent. They are keystone species, playing a critical role in maintaining the balance of their ecosystems by regulating populations of prey such as fish, crabs, and sea urchins. Their presence is often a vital indicator of a healthy, clean aquatic environment, making them highly valued by conservationists. With their specialized, incredibly dense fur, sensitive whiskers, and strong, webbed feet, otters are masterfully adapted to a life split between land and water. Whether they are sliding down muddy banks, juggling pebbles, or rafting together in giant floating groups, these social and energetic mammals are always a captivating sight for wildlife enthusiasts.

Habitat: Typically found in clean, undisturbed aquatic environments including rivers, lakes, wetlands, estuaries, and coastal marine kelp forests.

Appearance

Otters possess elongated, streamlined bodies with short limbs and powerful, webbed feet designed for efficient swimming. Their fur is remarkably dense and typically ranges from light brown to deep chocolate, often with a paler, silvery-grey throat and belly. They feature broad, flattened heads with small ears, long sensitive whiskers around their snout, and muscular, tapered tails that act as rudders. Sizes vary significantly between species, ranging from the small Asian small-clawed otter at around 60 centimeters in length to the massive giant otter of South America, which can exceed 1.7 meters.

KingdomAnimaliaPhylumChordataClassMammaliaOrderCarnivoraFamilyMustelidae

Otters

Interesting facts

A group of otters is called a 'romp' when they are on land, and a 'raft' when they are floating in the water.

Otters have a pocket of loose skin under their forearms that they use like a pouch to store food or their favorite rock for cracking open shellfish.

Sea otters hold hands while sleeping in water, forming rafts to prevent themselves from drifting apart in ocean currents.

Special abilities

Otters have up to one million hairs per square inch, trapping a layer of insulating air next to their skin to stay warm and dry in freezing waters.

Their highly sensitive whiskers detect minute vibrations and water currents, allowing them to locate prey in muddy or dark underwater conditions.

They can voluntarily seal their nostrils and ears shut when diving, preventing water from entering while foraging underwater.

Measurements & details

Length: 60-180 cm
Weight: 1-45 kg
Lifespan: 10-20 years
Top Speed: 12 km/h
Clutch Size: 1-5
Incubation: 60-120 days

Diet & Feeding

Otters are opportunistic carnivores that feed primarily on aquatic organisms, requiring high energy intake to maintain their body temperature.

Primary Foods

Fish
Crabs
Frogs
Sea Urchins
Crayfish
Clams

Foraging Method

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Ecological connections

hunts

Purple Sea Urchin

Strongylocentrotus purpuratus

Sea otters hunt purple sea urchins, preventing them from overgrazing and destroying ecologically vital kelp forests.

eaten by

Black Caiman

Melanosuchus niger

Giant otters in South America face predation threats from large reptiles like black caimans in shared river systems.

competitor

American Mink

Neogale vison

North American river otters compete with American minks for similar prey such as fish and crustaceans.

Traits

No trait badges are assigned for this object yet.

Also known as

otter

Collections

Collections for this object will appear here as more themes are added.

Safety

Danger

1/5 · Very low

No special safety notes yet.

Frequently Asked Questions

How to identify Otters?

The easiest way to identify Otters is to use the Snappit nature identifier app.

How long is Otters?

60-180 cm

How much does Otters weigh?

1-45 kg

How long does Otters live?

10-20 years

How fast can Otters move?

12 km/h

What does Otters eat?

Otters are opportunistic carnivores that feed primarily on aquatic organisms, requiring high energy intake to maintain their body temperature.

Where is Otters usually found?

Typically found in clean, undisturbed aquatic environments including rivers, lakes, wetlands, estuaries, and coastal marine kelp forests.

How does Otters hunt?

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