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These microplastics are frequently consumed by marine organisms at the base of the food chain, like plankton and fish larvae, which leads to a concentration of ingested plastic up the food chain. Plastics are produced with toxic chemicals which then enter the marine food chain, including the fish that some humans eat. [37]
The release of iron from whale feces encourages the growth of phytoplankton in the sea, [5] which not only benefits the marine food chain, but also sequesters carbon for long periods of time. [5] When phytoplankton, which is not consumed in its lifetime, perishes, it descends through the euphotic zone and settles down into the depths of sea.
[62] [63] Levels of pollutants in toothed-whale products are significantly higher than those of baleen whales, [64] reflecting the fact that toothed whales feed at a higher trophic level than baleen whales in the food chain (other high-up animals such as sharks, swordfish and large tuna show similarly high levels of mercury contamination). [65]
Researchers have warned that human impact on the ocean is putting increasing pressure on dolphins and whales, and their ecosystems. The UK whale and dolphin conservation charity Orca recorded ...
These microplastics are frequently consumed by marine organisms at the base of the food chain, like plankton and fish larvae, which leads to a concentration of ingested plastic up the food chain. Plastics are produced with toxic chemicals, so these toxic substances enter the marine food chain, including the fish that some humans eat.
Dolphin meat is high in mercury, and may pose a health danger to humans when consumed. [17] Ringed seals were once the main food staple for the Inuit. They are still an important food source for the people of Nunavut [18] and are also hunted and eaten in Alaska. Seal meat is an important source of food for residents of small coastal communities ...
Whales trap a lot of carbon, and if there are more of them, they can trap more of the carbon dioxide produced by human activity. Why helping whales to flourish can help fight climate change Skip ...
Scientists have said that the warming of the ocean has caused the whales to sometimes stray from protected zones in search of food, and that makes them more vulnerable to those threats. The whales were abundant off New England generations ago, but they were decimated during the commercial whaling era. 11/25/2024 13:01 -0500