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The sea otter (Enhydra lutris) is a marine mammal native to the coasts of the northern and eastern North Pacific Ocean.Adult sea otters typically weigh between 14 and 45 kg (30 and 100 lb), making them the heaviest members of the weasel family, but among [3] the smallest marine mammals.
Sea Otters can swim up to six miles per hour and hold their breaths for up to four minutes. They use these skills to dive as deep as 330 feet beneath the surface. 4.
Sea otters have dexterous hands which they use to smash sea urchins off rocks. Otters are the only marine animals that are capable of lifting and turning over rocks, which they often do with their front paws when searching for prey. [61] The sea otter may pluck snails and other organisms from kelp and dig deep into underwater mud for clams. [61]
Cephalopods, as active marine predators, possess sensory organs specialized for use in aquatic conditions. [1] They have a camera-type eye which consists of an iris, a circular lens, vitreous cavity (eye gel), pigment cells, and photoreceptor cells that translate light from the light-sensitive retina into nerve signals which travel along the optic nerve to the brain. [2]
In the 1700s, before they were hunted for their fur, there were thought to be 150,000 to 300,000 sea otters. Today, they have rebounded since their numbers were at their lowest, but they are still ...
A sea otter's overactive metabolism plays a key role in helping the diminutive marine mammal keep its body warm in frigid temperatures. The post Here’s How Sea Otters Keep Their Tiny Bodies Warm ...
Several otter species live in cold waters and have high metabolic rates to help keep them warm. Eurasian otters must eat 15% of their body weight each day, and sea otters 20 to 25%, depending on the temperature. In water as warm as 10 °C (50 °F), an otter needs to catch 100 g (3.5 oz) of fish per hour to survive.
Amphibians like frogs and toads can vocalise using vibrating tissues in airflow. For example, frogs use vocal sacs and an air-recycling system to make sound, while pipid frogs use laryngeal muscles to produce an implosion of air and create clicking noise. [7] Aquatic mammals such as seals and otters can produce sound using the larynx.