In contrast, fish-fed marine mammals consume foods that contain salt similar to their own blood, thus avoiding the problem altogether. Indeed, California sea lion studies have shown that in a fish diet, these animals can live without any fresh water.
Can marine mammals survive without water?
You can survive for hours, or even days, on land, but not indefinitely in water. Also, the weight of the body can crush the organs. Another major factor is overheating.
How do marine animals survive in salt water?
Soak in salt Most fish in the ocean tend to lose water. When the sea is high in salt, water constantly drains from the gills of the fish. .. Also, seawater is very salty, so you need to use special cells in your kidneys and gills to get rid of excess salt.
How do whales survive without freshwater?
I'm not sure how much a whale drinks, but it has a special kidney to handle the salt excreted in the urine, so you can drink seawater. .. Whales also eat prey that contains as much salt as blood, so they need less fresh water.
Can marine mammals live on land?
Some marine mammals, such as polar bears and otters, hold four weight-bearing limbs and can walk on land like complete terrestrial animals.
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