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Whales feed at deeper levels where krill is found, and their fecal matter, rich in iron, rises to the surface. This action enhances phytoplankton productivity and supports fish populations. Whales, along with krill, form a positive feedback loop, where their populations contribute to the recycling of iron, further boosting phytoplankton growth.
Krill is a rich source of protein and omega-3 fatty acids which are under development in the early 21st century as human food, dietary supplements as oil capsules, livestock food, and pet food. [ 77 ] [ 79 ] [ 84 ] Krill tastes salty with a somewhat stronger fish flavor than shrimp.
As the group circles a school of small fish such as salmon, krill, or herring, they use a team effort to disorient and corral the fish into a "net" of bubbles. [4] One whale will typically begin to exhale out of their blowhole at the school of fish to begin the process. [4] More whales will then blow bubbles while continuing to circle their prey.
Scientists say subtle differences in the colour of seawater will enable them to count tiny - but critically important - Antarctic marine creatures from Space. The target of the new research effort ...
Tiny but bountiful, Antarctic krill make up one of the planet’s largest biomasses, nourishing everything from fish to giant humpback whales. Takeaways from AP's reporting on Antarctica's ...
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Blue whales appear to avoid directly competing with other baleen whales. [83] [84] [85] Different whale species select different feeding spaces and times as well as different prey species. [75] [86] [87] In the Southern Ocean, baleen whales appear to feed on Antarctic krill of different sizes, which may lessen competition between them. [88]
Like right whales in other oceans, southern right whales feed almost exclusively on zooplankton, particularly krill. [5] They feed just beneath the water's surface, holding their mouths partly open and skimming water continuously while swimming. They strain the water out through their long baleen plates to capture their prey. A southern right ...