According to an answer here there is around 356,000 km of coastline on the planet. Saltwater vertebrates like many fish, and marine mammals like seals, sea lions and whales (the descendants of land animals that did learn to drink salt water) have the problem of trying to get rid of excess salt. I understand that evolution doesn't necessarily always do what's most efficient on a macro scale, but this drives me nuts. Click here to upload your image You can … Apparently, some species are capable of drinking salt water, like the sea lion and otter. They know this through experience, or the knowledge is passed on through language. Unsafe levels of salt and toxins depend on the age of the animal, its stage of production and the amount of water … In reality, humans don't need "salt" in their diets at all. If we simplify things and imagine dividing the land area into 1.3 km^2 grid with ~1.14 km the distance separating each watering hole meaning the furthest distance to a watering hole across all the earths land area (ON AVERAGE) is around 0.570 km or just under 7 minutes walk (using our previous 5km/h). Although the wild two-humped or Bactrian camel has been known about for years, scientists never realized it was genetically different from domesticated breeds until the … apparently, not even the sea mammals are drinking salt water, if they can avoid it (obtaining water from food, ice or other fresh water sources): In addition, a great many mammals are smaller and/or slower than humans, reducing the land area close to salt water they have available. Digestion. Now, as most people know, salt water is bad for you and dehydrates. A lot of cetaceans (whales and dolphins) do not drink the ocean water except by occasional accident. There are tons of ocean animals (particularly vertebrates) that don't gain any hydration (or very little) from the salt water. They excrete excess salts, which allows the fish to consume salt water without any problem. As the drop gets larger, the bird shakes its head to send the salt back to the ocean. 2. While humans can safely ingest small amounts of salt, the salt content in seawater is much higher than what can be processed by the human body. Most plants can tolerate saltwater on their leaves and stems, but they will dehydrate if they drink saltwater from the soil. Sea otters can also drink salt water and thus can remain at sea for several days at a time. Obviously, most animals do not have a complex communication system, but they do require water. Where green feed is available, animals can tolerate more saline water than when ‘bush’ or ‘scrub’ is the only feed. There are many negative effects of drinking salt water. Meanwhile, it has been proven in California, that Sea Lions can survive on a diet consisting only of fish. While some are osmoconfomers, a lot of them don't drink the seawater. You can also provide a link from the web. Polar bears will also have a drink at the freshwater melt ponds that can form on the sea ice during the warmer months of the year. You can … Please note that drinking SALT water is NOT the same thing as drinking SEA water, you should NEVER drink SEA water. This process concentrates the remaining fluid, which is finally excreted as urine. Smaller creatures can survive on water from rain & dew, which in many places is readily available. For desert animals, food is often one of the best sources of water, and it can be stored when water cannot. They get most of the water they need in their diet from their food because lots of fish are about 60 or 80 percent water. A little natural salt and water slows this process down and allows all the goodness of the water to be absorbed and used. I mentioned (in my last "paragraph") that many animals indeed DO live within such ranges. scientificamerican.com/article/how-can-sea-mammals-drink. This means there would be no selective … But don’t confuse drinking with bathing. It's the specific sodium + chloride isolated combination that humans and other animals …
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