How are algal blooms red tides) typically harmful to humans?

Question

Quizplus · Accepted Answer

Algal blooms or red tides can be harmful to humans in multiple ways. Swimming or fishing in contaminated water can lead to poisoning through skin contact or ingestion of the water. These blooms also destroy shellfish and other aquatic food sources, which can impact the economy and food supply. When shellfish consume the toxic algae, the toxins can accumulate in their tissues and cause illness or death to humans who consume them.

How Are Algal Blooms Red Tides) Typically Harmful to Humans