mention a few toxic contents in it?
Arsenic and toxins released by dinoflagellate.
Shellfish
Some shellfish, such as whelk, contain arsenic. A sample of whelk was found to have a total content of arsenic at of which 1% is inorganic arsenic.

Shellfish caught in Alaska can lead to paralytic shellfish poisoning (PSP).
PSP is caused by toxins released by dinoflagellate, a type of algae, which are extremely poisonous (1000 times more potent than cyanide) and can lead to death by paralyzing the breathing muscles.
what is the difference between sea otters and seals UNANSWERABLE where are such otters found? Along the coasts of northern and eastern North Pacific Ocean. what is its scientific name? "Enhydra lutris" . who are its predators? Orcas, sea lions, bald eagles, great white sharks in the water and coyote s, and bears on land. do these otters have social structures? They tend to rest together in single-sex groups called rafts consisting of 10 to 100 animals. how do they forage? They take short dives to the sea floor, may turn over rocks in search of prey like fish , snails and other organisms. At times it amy also carry a rock in the pouch across its chest to break open shellfish and clams. who is the first person to describe them? Georg Steller. who is he? He was a naturalist. how does sea otter impact the economy? Sea otters are blamed for declines in shellfish harvest. However, they help the kelp harvesting industry and also pose as a major tourist attraction. in which religion does the above mentioned fish harvested have dietary restrictions? The Jews and the Seventh-day Adventists.
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Shellfish [SEP] Toxic content
Some shellfish, such as whelk, contain arsenic. A sample of whelk was found to have a total content of arsenic at of which 1% is inorganic arsenic. Shellfish caught in Alaska can lead to paralytic shellfish poisoning (PSP). PSP is caused by toxins released by dinoflagellate, a type of algae, which are extremely poisonous (1000 times more potent than cyanide) and can lead to death by paralyzing the breathing muscles. Due to warming oceans algae blooms have become more widespread, thereby increasing the likelihood of intoxications of various types.