Members of which group are known to form blooms known as red tides?

A) Green algae
B) Red algae
C) Euglenoids
D) Dinoflagellates
E) Brown algae

Red Tides

A phenomenon caused by algal blooms that turn the sea or other bodies of water a red or reddish color, often resulting in toxic effects on marine life.

Dinoflagellates

A group of single-celled organisms found in marine and freshwater environments known for their role in aquatic food chains and some can cause red tides.