Ceratocorys horrida is a species of dinoflagellate.

[1] The body may be round in shape, or angular.

[2] The species has spines emanating from its body which may vary in length, which has resulted in the species described in various forms.

[1] C. horrida is widespread around the globe, found in temperate to tropical ocean waters in the Neritic zone.

[2] It is among the dominant species in the Humboldt Current.