Under certain environmental conditions, the microscopic alga Karenia brevis grows quickly, creating blooms that can make the ocean appear red or brown. K. brevis produces powerful toxins called brevetoxins, which
have killed millions of fish. In addition to killing fish, brevetoxins can become concentrated in the tissues of
from paralytic shellfish poisoning, a food poisoning that can cause severe gastrointestinal and neurological
symptoms, such as tingling in the fingers or toes. Use your results to explain why these so-called “red tides"
occur in coastal water