Which of the following creatures is responsible for the phenomenon of 'red tide'?

Red tide is caused by a rapid bloom of algae, chiefly dinoflagellates, that discolours the water.

Coral reefs do not produce the red tide phenomenon.

The red drum is a fish and not the cause of the coloured tide.

Crocodiles have no role in generating red tides.

Such algal blooms can release toxins that kill fish and harm human health.

Nutrient runoff from fertilisers often triggers these harmful algal blooms.