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Additionally, the iron-rich feces of krill-eating whales encourage phytoplankton growth, benefiting the marine food chain and sequestering carbon dioxide for extended periods. The Southern Ocean , rich in nutrients but iron-deficient, experiences increased phytoplankton blooms due to whale feces, acting as a significant carbon sink .
Orcas also prey on larger species such as sperm whales, grey whales, humpback whales and minke whales. [ 84 ] [ 40 ] On three separate occasions in 2019 orcas were recorded to have killed blue whales off the south coast of Western Australia, including an estimated 18–22-meter (59–72 ft) individual. [ 89 ]
The meat the orcas took was likely squid, the company said, either “stolen from the sperm whales’ jaws or regurgitated (by the sperm whales) in a defensive effort to relinquish a potential ...
In these systems, humans mainly eat predatory fish and have a fractional trophic level of 4.65 and 4.5, respectively, which in Roopnarine's view makes those humans apex predators. [b] [30] In 2021, Miki Ben-Dor and colleagues compared human biology to that of animals at various trophic levels.
The sperm whale or cachalot [a] (Physeter macrocephalus) is the largest of the toothed whales and the largest toothed predator.It is the only living member of the genus Physeter and one of three extant species in the sperm whale family, along with the pygmy sperm whale and dwarf sperm whale of the genus Kogia.
Colossal squid are a major prey item for sperm whales in the Antarctic; 14% of the squid beaks found in the stomachs of these sperm whales are those of the colossal squid, which indicates that colossal squid make up 77% of the biomass consumed by these whales. [39] Many other animals also feed on colossal squid, including the beaked whales ...
A food web model is a network of food chains. Each food chain starts with a primary producer or autotroph, an organism, such as an alga or a plant, which is able to manufacture its own food. Next in the chain is an organism that feeds on the primary producer, and the chain continues in this way as a string of successive predators.
A pair of Humpback whales were photographed mating for the first time ever recently. Both were males. The finding has shocked the scientific community, who never have been able to document whales ...