Distribution | Characteristics | Venom effects |
Biomedical database Diagnosis & Treatment |
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Fresh water |
Marine environment |
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Injury due to extensive contact/abrasion | ||||||
Hard consistency
Stony corals |
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tropical and subtropical reef areas |
sessile; often extend over large areas; stable calcium carbonate skeleton; highly variable growth forms, from flat to highly branched |
generally only local | ||
Spongious/elastic consistency
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medically significant species in the coastal waters of the Caribbean and the Pacific |
sessile, solitary or in colonies; variable growth forms, flat, barrel-, pipe- and cup-shaped forms; porous surface |
generally only local | Biomedical database | ||
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Feather hydroids |
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tropical to cool coastal zones |
sessile; feather-like form; flexible, chitin-like supporting skeleton |
generally only local | |
Soft or gelatinous consistency
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tropical to cold seas and oceans |
free-swimming, in areas close to the coast or in the open sea; no supporting skeleton; many colourless, transparent species; consist of a bell and attached tentacles that may be up to several meters in length |
often only local effects, but some species cause severe systemic effects |
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Anemones |
tropical to cold coastal areas; often in the intertidal zone |
flower-like animals with no supporting skeleton; consist of a sessile pedal disk (foot) with a crown of tentacles on top |
generally only local | |||
Marine worms
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tropical to warm oceans |
elongated, segmented body; fine bristles along the sides of the body; largest specimens 1–3 m |
generally only local | Biomedical database | |
Injury due to puncture wound/bite | ||||||
Barely noticeable wounds/bites
Cone shells |
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primarily tropical coastal areas of the Indian and Pacific Oceans |
marine snails with shells in the form of a rolled cone; shells often have striking patterns; largest species up to 15 cm; can be dangerous if handled (they are sought after by collectors); sting barely noticeable |
hardly any local effects; can be severe systemic effects |
Biomedical database | |
Octopuses, Blue-ringed octopus |
generally in tropical to cold seas and oceans; Blue-ringed octopus in coastal waters of Australia |
typical octopus form with a "head" and 8 arms; brownish colour with luminous blue rings |
Blue-ringed octopus: hardly any local effects, but severe systemic effects; other species: generally only local |
Biomedical database | ||
Sea snakes |
river mouths and further upstream; Indo-Pacific region; in Lake Taal, Philippines, and Lake Tegano, Solomon Islands |
coastal waters of the Indo-Pacific, from the Persian Gulf eastwards to Japan and southwards to Australia; one species in the open sea as well as on the east coast of Africa and the west coast of Central America |
differ from snake-like fishes in that they have no fins or gills; in contrast to terrestrial snakes they have a laterally flattened tail; most common in the shallow coastal waters of Southeast Asia, New Guinea and Australia; bite marks often barely visible |
hardly any local effects, but severe systemic effects |
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Painful puncture wounds
Numerous small injuries
Sea urchins and starfish |
venomous sea urchins in tropical and warm zones of the Indian, Pacific and Atlantic Oceans; Crown-of-thorns starfish in coral reefs of the Indo-Pacific |
bottom-dwelling; venomous sea urchins among both long- and short-spined species; following injuries with long-spined species broken-off spine tips may remain under the skin; Crown-of-thorns starfish covered in massive spines; animals have a diameter of up to 40 cm; large puncture wounds |
generally only local, but sometimes also systemic effects |
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Single puncture wounds
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Catfishes throughout the world in rivers and lakes
stingrays in rivers in South America |
tropical to cold seas and oceans; greatest variety of dangerous species in tropical coastal waters |
many bottom-dwelling species, which sometimes bury themselves or hide in crevices and often have camouflage colouring; some species also in the intertidal zone; accidents occur not only in the water, but also while fishing or preparing the fish |
often only local effects, but some species also cause systemic effects |