Best Diadematoida
The long-spined sea urchin (Diadema antillarum) is a species of echinoderm found in the shallow waters of the Caribbean and the western Atlantic Ocean. It is characterized by its black, hollow, venom-tipped spines, which provide defense against predators. As a primary herbivore, it plays a vital eco...
The banded urchin (Echinothrix calamaris) is a species of tropical sea urchin found in coral reef environments across the Indo-Pacific region. It belongs to the family Diadematidae and is easily recognized by its long, hollow primary spines, which display distinct, bold dark-and-light banding. While...
The long-spined sea urchin (Centrostephanus rodgersii) is a large diadematid echinoid found on rocky reefs along southeastern Australia, including New South Wales, Tasmania, and the eastern Bass Strait. Where urchin densities rise, grazing can remove kelp and other macroalgae, forming barrens that r...
The blue-black urchin (Echinothrix diadema) is a species of sea urchin found throughout the Indo-Pacific region's coral reefs. It is characterized by exceptionally long, hollow spines that can reach up to 30 centimeters in length and provide protection against predators. These spines are venomous an...
Diadema africanum is a species of long-spined sea urchin in the family Diadematidae, first described in 2006 following taxonomic separation from the Indo-Pacific Diadema setosum. It inhabits shallow rocky reefs and volcanic substrates of the eastern Atlantic, including the Canary Islands, Madeira, C...
Diadema clarki is a species of long-spined sea urchin in the family Diadematidae. It was described by Ikeda in 1939 from Japan and is recognized in current taxonomic databases as an accepted species of the genus Diadema. Records from the Indo-Malay region distinguish it from related long-spined urch...
Plesiodiadema indicum is a species of deep-sea diadematid sea urchin recorded from the Indian Ocean. It belongs to a group of regular sea urchins characterized by a rounded body and slender spines used for movement and protection. Reports from bathyal and abyssal depths place the species on the deep...
