Red tide: Quick Facts

Written and fact-checked by

The Information Architects of Encyclopaedia Britannica

Facts

Also Known As	red water

Photos and Videos

Dead fish scattered along the sandy shore of Tampa Bay, Florida, with reddish and greenish water bands near the coast caused by a red tide dinoflagellate bloom.

Reddish-brown algae from a red tide event accumulates along the shore of a sandy beach, with houses and greenery visible in the background.

Bright green algae blooms distort the surface of water.

See All Videos and Images →

Topics

Gonyaulax Gymnodinium Marine ecosystem Dinoflagellate phytoplankton Gonyaulax catenella Water bloom

Chutes d'Ekom - a waterfall on the Nkam river in the rainforest near Melong, in the western highlands of Cameroon in Africa.

Ecosystems