Question

what are red tides?and what causes it?​

Answer 1

Red Tides

Red tide is a phenomenon caused by algal blooms (Wikipedia definition) during which algae become so numerous that they discolor coastal waters (hence the name "red tide").

it cause

The algal bloom may also deplete oxygen in the waters and/or release toxins that may cause illness in humans and other animals.

◼◽▪ Follow Me ▫◾◻

______________________

Answer 2

Red tide is a common name for algal blooms, which are large concentrations of aquatic microorganisms, such as protozoans and unicellular algae

A red tide occurs when the population of certain kinds of algae known as dinoflagellates explodes, creating what's called an "algal bloom." Scientists sometimes refer to red tides as harmful algal blooms or HABs.