Is the red tide harmful to humans?

Red tides can produce toxins that are harmful for humans and marine life. They are most harmful for those humans who have a history of chronic respiratory illness.

Red tides are caused by algae, tiny microorganisms that grow in the water. Almost all bodies of water have algae. A red tide is caused by the excess amount of algae in the water.

For more relevant articles refer to the links given below:

• UPSC Environment and Ecology Questions
• Conservation of Biodiversity
• UPSC Environment and Ecology