Commensal Sea Urchin Shrimp (Periclimenes colemani) - male and female on venomous Fire Urchin (Asthenosoma varium). Great Barrier Reef, Queensland, Australia © Gary Bell / OceanwideImages.com
Commensal Urchin Shrimp (Stegopontonia commensalis) - on Sea Urchin (Diadema sp.) spine. Bali, Indonesia © Gary Bell / OceanwideImages.com
Commensal Urchin Shrimp (Stegopontonia commensalis) - on Sea Urchin (Diadema sp.) spine. Bali, Indonesia © Gary Bell / OceanwideImages.com
Commensal Shrimp (Allopontonia iaina) on Stinging Fire Urchin (Asthenosoma ijimai). Found in association with stinging fire urchins throughout Indo-Pacific. Photo taken Lembeh Strait, Sulawesi, Indonesia © Gary Bell / OceanwideImages.com
Commensal Shrimp (Allopontonia iaina) on Stinging Fire Urchin (Asthenosoma ijimai). Found in association with stinging fire urchins throughout Indo-Pacific. Photo taken Lembeh Strait, Sulawesi, Indonesia © Gary Bell / OceanwideImages.com
Commensal Shrimp (Allopontonia iaina) on Stinging Fire Urchin (Asthenosoma ijimai). Found in association with stinging fire urchins throughout Indo-Pacific. Photo taken Lembeh Strait, Sulawesi, Indonesia © Gary Bell / OceanwideImages.com
Zebra Urchin Crab (Zebrida adamsii) - on Fire Uchin (Asthenosoma varium). Found throughout the Indo-Pacific. Photo taken Lembeh Strait, Sulawesi, Indonesia © Gary Bell / OceanwideImages.com
Pair of Zebra Urchin Crab (Zebrida adamsii) - on Fire Uchin (Asthenosoma varium). Found throughout the Indo-Pacific. Photo taken Lembeh Strait, Sulawesi, Indonesia © Gary Bell / OceanwideImages.com
Sea Urchin (Possibly: Astropyga radiata). Bali, Indonesia © Gary Bell / OceanwideImages.com
Sea Urchin (Diadema palmeri). Solitary Islands, New South Wales, Australia © Gary Bell / OceanwideImages.com
Sea Urchin (Parasalenia gratiosa). Bali, Indonesia © Gary Bell / OceanwideImages.com
Detail of a Flower Sea Urchin (Toxopneustes pileolus). Also known as Toxic or Venomous Sea Urchin. This Urchin has sharp toxic spines and has caused fatalities. Great Barrier Reef, Queensland, Australia © Gary Bell / OceanwideImages.com
Schooling juvenile Cardinalfish sheltering within the spines of Sea Urchin (Possibly: Astropyga radiata). Bali, Indonesia © Gary Bell / OceanwideImages.com
Detail of Flower Sea Urchin (Toxopneustes pileolus). Also known as Toxic or Venomous Sea Urchin.This Urchin has sharp toxic spines and has caused fatalities. Great Barrier Reef, Queensland, Australia © Gary Bell / OceanwideImages.com
Sea Urchin (Echinothrix calamaris). Bali, Indonesia © Gary Bell / OceanwideImages.com
Fire Urchin (Astropyga radiata). Also known as Red Urchin and False Fire Urchin. Found throughout the Indo Pacific. Photo taken off Anilao, Philippines. © Gary Bell / OceanwideImages.com
Sea Urchin (Echinothrix calamaris). Bali, Indonesia © Gary Bell / OceanwideImages.com
Sea Urchin (Echinothrix calamaris). Bali, Indonesia © Gary Bell / OceanwideImages.com
Fire Urchin (Asthenosoma varium). This urchin has venom-tipped spines and can inflict a painful sting if handled. Great Barrier Reef, Queensland, Australia © Gary Bell / OceanwideImages.com
Purple Sea Urchin (Heliocidaris erythrogramma). Found on sheltered and moderately exposed reefs throughout southern Australia, from Shark Bay, WA, to southern Queensland, including Tas, Australia © Gary Bell / OceanwideImages.com
Sea Urchin (Heliocidaris erythrogramma). Found on sheltered and moderately exposed reefs throughout southern Australia, from Shark Bay, WA, to southern Queensland, including Tas, Australia © Gary Bell / OceanwideImages.com
Flower Sea Urchin (Toxopneustes pileolus). Also known as Toxic or Venomous Sea Urchin.This Urchin has sharp toxic spines and has caused fatalities. Found throughout the Indo-Pacific. Photo taken Lembeh Strait, Sulawesi, Indonesia © Gary Bell / OceanwideImages.com
Fire Urchin (Asthenosoma ijimai). This sea urchin has venomous spines and able to inflict painful stings. Found throughout the Indo-Pacific. Photo taken Lembeh Strait, Sulawesi, Indonesia © Gary Bell / OceanwideImages.com
Fire Urchin (Asthenosoma ijimai). This sea urchin has venomous spines and able to inflict painful stings. Found throughout the Indo-Pacific. Photo taken Lembeh Strait, Sulawesi, Indonesia © Gary Bell / OceanwideImages.com
Flower Sea Urchin (Toxopneustes pileolus). Also known as Toxic or Venomous Sea Urchin.This Urchin has sharp toxic spines and has caused fatalities. Found throughout the Indo-Pacific. Photo taken Lembeh Strait, Sulawesi, Indonesia © Gary Bell / OceanwideImages.com
Fire Urchin (Asthenosoma ijimai). This sea urchin has venomous spines and able to inflict painful stings. Found throughout the Indo-Pacific. Photo taken Lembeh Strait, Sulawesi, Indonesia © Gary Bell / OceanwideImages.com
Fire Urchin (Asthenosoma ijimai) - close detail of stinging spines. This sea urchin has venomous spines and able to inflict painful stings. Found throughout the Indo-Pacific. Photo taken Lembeh Strait, Sulawesi, Indonesia © Gary Bell / OceanwideImages.com
Flower Urchin (Toxopneustes pileolus) - close detail of stinging spines around the mouth. Also known as Toxic or Venomous Sea Urchin.This Urchin has sharp toxic spines and has caused fatalities. Found throughout the Indo-Pacific. Lembeh Strait, Indonesia. © Gary Bell / OceanwideImages.com
Fire Urchin (Astropyga radiata). Also known as Red Urchin and False Fire Urchin. Found throughout the Indo Pacific. Photo taken off Anilao, Philippines. © Gary Bell / OceanwideImages.com
Fire Urchin (Asthenosoma ijimai) - close detail of upper area showing stinging spines. This sea urchin has venomous spines and able to inflict painful stings. Found throughout the Indo-Pacific. Anilao, Philippines. Within the Coral Triangle. © Gary Bell / OceanwideImages.com
Fire Urchin (Astropyga radiata). Also known as Red Urchin and False Fire Urchin. Found throughout the Indo Pacific. Photo taken off Anilao, Philippines. Within the Coral Triangle. © Gary Bell / OceanwideImages.com
Fire Urchin (Astropyga radiata). Also known as Red Urchin and False Fire Urchin. Found throughout the Indo Pacific. Photo taken off Anilao, Philippines. Within the Coral Triangle. © Gary Bell / OceanwideImages.com
Sea Urchin (Maretia planulata). This species will bury itself under the sand and is found in Indo-West Pacific. Photo taken off Anilao, Philippines. Within the Coral Triangle. © Gary Bell / OceanwideImages.com
Marine pollution rubbish trash garbage - discarded beer can resting sitting on a Sea Urchin. Pacific Ocean, Australia © Gary Bell / OceanwideImages.com
Flower Urchin (Toxopneustes pileolus), close detail of venomous spines. Also known as Toxic or Venomous Sea Urchin. This Urchin has sharp toxic spines and has caused fatalities. Found throughout the Indo-Pacific. Anilao, Philippines. Coral Triangle. © Gary Bell / OceanwideImages.com
Flower Urchin (Toxopneustes pileolus). Also known as Toxic or Venomous Sea Urchin. This Urchin has sharp toxic spines and has caused fatalities. Found throughout the Indo-Pacific. Photo taken off Anilao, Philippines. Within the Coral Triangle. © Gary Bell / OceanwideImages.com
Flower Urchin (Toxopneustes pileolus), close detail of venomous spines. Also known as Toxic or Venomous Sea Urchin. This Urchin has sharp toxic spines and has caused fatalities. Found throughout the Indo-Pacific. Anilao, Philippines. Coral Triangle. © Gary Bell / OceanwideImages.com
Sea Urchin (Amblypneustes pallidus). Found usually attached to sea grass and a variety of algas in the temperate waters of southern Western Australia and South Australia. Photo taken at Edithburgh, York Peninsula, South Australia, Australia. © Gary Bell / OceanwideImages.com
Flower Urchin (Toxopneustes pileolus), close detail of venomous spines. Also known as Toxic or Venomous Sea Urchin. This Urchin has sharp toxic spines and has caused fatalities. Found throughout the Indo-Pacific. Anilao, Philippines. Coral Triangle. © Gary Bell / OceanwideImages.com
Sea Urchin (Tripneustes gratilla). Found throughout the Indo Pacific. Photo taken off Anilao, Philippines. Within the Coral Triangle. © Gary Bell / OceanwideImages.com
Sea Urchin (Heliocidaris erythrogramma). Found on sheltered and exposed reefs throughout southern Australia, from Shark Bay, WA, to southern Qld, including Tas. Photo taken Port Phillip Bay, Vic, Australia. © Gary Bell / OceanwideImages.com
Black Sea Urchin (Diadema savignyi). Found throughout the Indo-Pacific, East Africa, outh Pacific Islands and Japan. Photo taken at Solitary Islands Marine Park, Coffs Harbour, New South Wales, Australia. © Gary Bell / OceanwideImages.com
Black Sea Urchin (Diadema savignyi). Found throughout the Indo-Pacific, East Africa, outh Pacific Islands and Japan. Photo taken at Solitary Islands Marine Park, Coffs Harbour, New South Wales, Australia. © Gary Bell / OceanwideImages.com
Flagfin Cardinalfish (Apogon hoeveni) seeking protection against predators by hovering close to the needles of poisonous Sea Urchins. Photo taken Lembeh Strait, Indonesia © MIchael Patrick O'Neill / OceanwideImages.com
Sea Urchin (Lytechinus variegatus), with discarded bottle tops and other rubbish attached. Photo taken in Lake Worth Lagoon, Singer Island, Florida, USA. © Michael Patrick O'Neill / OceanwideImages.com
Sea Urchin (Lytechinus variegatus), with discarded bottle tops and other rubbish attached. Photo taken in Lake Worth Lagoon, Singer Island, Florida, USA. © Michael Patrick O'Neill / OceanwideImages.com
Red Liomera Crab (Liomera rubra). Female with eggs, resting in a Slate Pensil Sea Urchin (Heterocentrotus mammillatus). Photo taken at Hawaii, USA © David Fleetham / OceanwideImages.com
Divers with underwater scooters exploring a coral reef covered in Pencil Sea Urchins off Maui, Hawaii, USA. © David Fleetham / OceanwideImages.com
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