Best Long Spined

Diadema setosum is a regular sea-urchin belonging to the Diadematidae family. This extant Indo-Pacific species is notable for its vibrant orange anal ring, a characteristic that distinguishes it within the *Diadema* genus. It’s particularly relevant to marine biologists and researchers studying urch...

Diadema savignyi is a regular sea urchin belonging to the Diadematidae family and found throughout the Indo-Pacific region. This long-spined species is notable for its distinctive appearance and role in maintaining reef ecosystems. It’s frequently studied by marine biologists and researchers investi...

Astropyga radiata is a regular sea-urchin belonging to the Diadematidae family. This extant Indo-Pacific species is notable for its distinctive long spines and symmetrical structure. It’s primarily found in shallow waters of the western Pacific Ocean. Researchers studying echinoderm morphology and b...

Centrostephanus rodgersii is an extant Australian sea urchin belonging to the Diadematidae family. This species is notable due to its exceptionally long spines, which contribute significantly to the formation of extensive underwater barren reefs along Australia’s coastlines. Its dense populations an...

Diadema mexicanum is a regular sea-urchin belonging to the Diadematidae family. This extant species inhabits the East Pacific Ocean and plays a significant role in controlling algae growth on coral reefs. Its long spines and herbivorous diet make it a crucial component of reef ecosystems, benefiting...

Astropyga magnifica is a marine sea urchin belonging to the family Diadematidae, originally described by Hubert Lyman Clark during his 20th-century expeditions.

Centrostephanus longispinus is a marine echinoid belonging to the Diadematidae family, noted for its exceptionally long spines in the Mediterranean Sea.

Diadema ascensionis is a sea urchin of the Diadematidae family, primarily distributed across the eastern Atlantic Ocean and notably discovered near Ascension Island.

Astropyga nuptialis is a distinct species of Indo-Pacific sea urchin in the Diadematidae family, recognized for its long, venom-tipped defensive spines.

Centrostephanus coronatus, or the crowned sea urchin, is an eastern Pacific echinoid described by Addison Emery Verrill in 1867 with distinctive banded spines.

Astropyga pulvinata is a benthic sea urchin of the Diadematidae family, notable for its cushion-like morphology and presence in tropical marine waters.

Diadema paucispinum is a species of sea urchin within the Diadematidae family, characterized by having relatively fewer spines compared to other Diadema species.

Centrostephanus nitidus is a sea urchin in the family Diadematidae, named for its smooth, glossy appearance and primarily found in deep marine environments.

Centrostephanus asteriscus is a species of deep-water sea urchin within the Diadematidae family, distinguished by its prominent, slender radial spines.

Diadema palmeri is a benthic sea urchin of the Diadematidae family, recognized for its endemic distribution in the coastal marine waters of New Zealand.

Centrostephanus fragile is a deep-sea dwelling sea urchin in the family Diadematidae, scientifically recognized for its unusually delicate, fragile spines.

Echinodiadema coronata is a species of sea urchin recognized within the family Diadematidae, noted for the crown-like arrangement of its primary spines.

Chaetodiadema granulatum is a species of echinoid belonging to the family Diadematidae, distinguished by the granular texture of its skeletal structure.

Chaetodiadema tuberculatum is a deep-sea echinoid of the Diadematidae family, characterized by the distinct tubercles present across its hard calcareous test.

Described by Ole Theodor Jensen Mortensen in 1939, *Goniodiadema mauritiense* is a notable deep-sea sea urchin first identified near Mauritius.

Chaetodiadema keiense is a marine sea urchin classified within the Diadematidae family, specifically noted for its identification in the Kei Islands region.

*Eremopyga denudata* is a species of sea urchin described by the Swiss-American zoologist Alexander Emanuel Agassiz in 1872.