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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.
The North American river otter (Lontra canadensis), also known as the northern river otter and river otter, is a semiaquatic mammal that lives only on the North American continent throughout most of Canada, along the coasts of the United States and its inland waterways. An adult North American river otter can weigh between 5.0 and 14 kg (11.0 ...
The sea otter propels itself underwater by moving the rear end of its body, including its tail and hind feet, up and down, [38] and is capable of speeds of up to 9 kilometres per hour (5.6 mph). [6] When underwater, its body is long and streamlined, with the short forelimbs pressed closely against the chest. [46]
They're spending an average of 1.5 hours on them every school day, with 25% of students logging on for more than two hours, according to a new study published Monday in JAMA Pediatrics.
[17] [18]: 250 Manatees generally glide at speeds of 8 kilometres per hour (5 mph), but can reach speeds of 24 kilometres per hour (15 mph) in short bursts. [72] The body is fusiform to reduce drag in the water. Like cetaceans, the hind limbs are internal and vestigial. The snout is angled downwards to aid in bottom-feeding. [73]
A full-time employee typically works about 40 hours per week for a total of 2,080 hours annually. Multiply 2,080 by $25, and the annual wage for a $25-per-hour employee is $52,000 per year.
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