Best Spatangoida
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The sea potato is a burrowing heart urchin found in the coastal sandy sediments of Europe and Australasia, distinguished by its heart-shaped, dense yellowish-spined skeletal test.
Abatus cavernosus is a species of Antarctic heart urchin notable for its specialized brooding behavior, where females protect their young in depressions.
The red heart urchin is a large, burrowing echinoderm found in the tropical Western Atlantic Ocean, noted for its reddish spines and its crucial role in aerating sandy marine environments.
The purple heart urchin is a marine echinoderm native to the Northeast Atlantic and Mediterranean Sea, recognized by its vividly colored purple spines and its deep-burrowing lifestyle.
Abatus shackletoni is a brooding heart urchin from the Schizasteridae family, named in honor of the renowned Antarctic explorer Ernest Shackleton.
Metalia spatagus is a heart urchin in the family Metaliidae found across the Indo-Pacific, originally described by Carl Linnaeus in 1758.
Brissopsis lyrifera is a heart urchin in the family Brissidae found in the North Atlantic and Mediterranean Sea, where it burrows in soft sediments.
Lovenia subcarinata is a species of sea urchin in the family Loveniidae, recognized by its elongated, heart-shaped test and distinct keel.
Abatus nimrodi is a species of irregular sea urchin discovered in the Southern Ocean, notable for being named after the historic Antarctic expedition.
Echinocardium australe is a species of heart urchin native to the coastal waters of Australia, where it buries itself deeply in the marine sediment.
Tripylus excavatus is a heart urchin species known for its distinctive excavated fascioles and deep-burrowing lifestyle in marine sediments.
Breynia australasiae is a species of heart urchin found in the shallow marine environments of Australasia, belonging to the Loveniidae family.
Paleopneustes cristatus is a deep-sea heart urchin in the family Paleopneustidae known from the Caribbean Sea and western Atlantic Ocean.
Agassizia excentrica is a deep-sea heart urchin named in honor of American zoologist Alexander Agassiz, known from the western Atlantic.
Pericosmus cordiformis is a heart urchin in the family Pericosmidae, named for its characteristically heart-shaped test morphology.
Echinocardium capense is a burrowing heart urchin species first described from South Africa, dwelling in the sandy substrates of the ocean floor.
Rhynobrissus cuneus is a heart urchin species known from soft marine sediments, distinguished by its wedge-shaped test profile.
Brissopsis atlantica is a heart urchin in the family Brissidae known from the Atlantic Ocean, where it inhabits soft-bottom marine sediments.
Brissopsis elongata is a heart urchin in the family Brissidae recognized by its notably elongated test, found in marine soft sediments.
Brissopsis capensis is a heart urchin in the family Brissidae originally described from deep-water sediments off the coast of South Africa.
