Sea Cucumbers
Though Sea Cucumbers are apparently harmless, when under threat, these animals will expel holothurin which is a white awkward like substance from their Cuvierian organ.Holothurin is a potent poison and the malice of the sea cucumbers cursorily weakens the muscles of the enemy. Sea Cucumber venom is toxic to humans if the Cuvierian tubules come into contact with the eyes, the result may be permanent blindness.
Fire Coral
Fire Coral besides known as Stinging or Red Sea Coral belongs to the Milleporina order of species and contrary to popular belief international relations and security network ’ t in truth a coral at all. Fire corals are marine organisms that form colonies that look good like real number coral ; they are actually closely refer to the jellyfish family and other stinging anemones. The Fire Coral gets its name from the irritating sunburn sting that it inflicts on the unwary diver that brushes against it. A fire Coral stick can cause intense pain and can be felt from two days to up to two weeks. ( Also Read: Playing With Fire Underwater : Fire Coral Demystified )
Crown-of-Thorns Starfish
Out of all starfish species, the Crown-of-thorns starfish is probably the most dangerous to divers. The sharp spines on the sides of the starfish ’ s limbs resemble thorns and create a crown-like determine, giving the animal its name. These thorns are very sharp and are capable of piercing through wetsuits and early clothe and are contain a neurotoxin that can cause onset of edema, erythema, trouble, deoxyadenosine monophosphate well as nausea and vomit. Crown-of-thorn starfish are found in tropical coral reefs in the Red Sea, the indian Ocean, and the Pacific Ocean .
Hydroids
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Hydroids are feathery plants like creatures closely related to jellyfish, with stinging cells, and are sometimes referred to as fireweed. Hydroids are actually colonies of animals equipped with strong stinging cells ( nematocysts ) used to capture prey and for defense. Attached to virtually any firm surface including rocks, seaweeds, and man-made objects including docks and mooring lines Hydroids are one of the primary coil causes of itching and skin excitation for divers that incidentally come in contact with this bantam creatures. Two species to avoid in particular are the white, finely feathery ones known as the Feather Hydroid and the dense yellow/brown variety .
Sea Urchins
Divers are specially wary of these creatures chiefly due to the fact that accidental stings while walking in a shallow reef, or touching one incidentally while Scuba diving can be a painful proposition. The spines of sea urchins remain in the weave cause wound mend lento. Sea urchins inject a modest amount of venom when bite, but the sum is negligible to cause any serious injury, around 10 species of Urchins are poisonous but there are a few that are baneful. Sea urchin stings must be washed thoroughly and rinsed with vinegar to wash out the stings and then watched over the following couple of days for signs of contagion. Divers should be constantly argus-eyed where they place their hands, to avoid an accidental find with these barbed devils .
* Photo credits: photos by Nemo’s Great Uncle, jon hanson, enje, Dungodung on flickr
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