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Baleen whales get the water they need from their food; however, the salt content of most of their prey (invertebrates) is similar to that of seawater, whereas the salt content of a whale's blood is considerably lower (three times lower) than that of seawater.
Gray whales have been observed rubbing against the gravelly seafloor to dislodge barnacles. [25] Coronula on a gray whale. Conversely, some whales may use barnacles as weapons or protective armor to add power to a strike in mating battles or as a deterrent to being bitten by orcas (Orcinus orca).
The whale then pushes the water out, and animals such as krill are filtered by the baleen and remain as a food source for the whale. Baleen is similar to bristles and consists of keratin, the same substance found in human fingernails, skin and hair. Baleen is a skin derivative. Some whales, such as the bowhead whale, have
Drone videos of gray whales off Oregon have revealed new details about how the marine mammals find food. The findings were described in studies this summer. Drone video of gray whales offers new ...
More whales will then blow bubbles while continuing to circle their prey. The size of the net created can range from three to thirty metres (9.8 to 98.4 ft) in diameter. [ 6 ] One whale will sound a feeding call, at which point all whales simultaneously swim upwards with mouths open to feed on the trapped fish. [ 4 ]
Whales are vulnerable to entanglement in fishing gear and collisions with large ships, and scientists have said both threats are made more severe by warming waters because ocean changes cause ...
Toothed whales have well-developed senses – their eyesight and hearing are adapted for both air and water, and they have advanced sonar capabilities using their melon. Their hearing is so well-adapted for both air and water that some blind specimens can survive. Some species, such as sperm whales, are well adapted for diving to great depths.
These whales can weigh up to 140,000 pounds and get up to 52 feet in length. Right whales get their name from whalers who claimed they were the "right" whales to hunt.