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Their intestinal tract is highly adapted to absorb the most nutrients from food; the walls are folded and contain copious blood vessels, allowing for a greater surface area over which digested food and water can be absorbed. Baleen whales get the water they need from their food; however, the salt content of most of their prey (invertebrates) is ...
As the whales swim up to the surface to feed they can hold up to 15,000 gallons of sea water in their mouths. [citation needed] Humpback whales have 14 to 35 throat grooves that run from the top of the chin all the way down to the navel. [3] These grooves allow the mouth to expand. [3]
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 ...
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
A study of the Southern Ocean found that whales not only recycled iron concentrations vital for phytoplankton, but also formed, along with krill, a major source of sequestered iron in the ocean, up to 24% of the iron held in the surface waters of Southern Ocean. Whales formed part of a positive feedback loop and if whale populations are allowed ...
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 ...
After settling, the juvenile barnacles form a ring-shaped structure that firmly grips onto the skin, growing upwards as a cylinder. Wall plates do not form at first, though the juveniles do develop stripes. This cylindrical shape is similar to the adult T. major, which attaches to right whales. [19]
The latest study provides further proof of long-distance migration by humpback whales. Researchers say that understanding how frequently these area shifts occur can help assess their population ...