Sea Urchin

The spines vary in length and thickness and in the amount of poison on them. Some such as those pictured below are long and thin whereas others such as those above are shorter.

Sea UrchinMost sea urchins feed on algae which  they scrape off the substrate. 

Sea Urchin

Sea Urchin

Sea Urchin Spines- How to deal with them

Urchins can be quite attractive looking as can be seen in the images but they are prickly and many have poisons on their spines. Whether one is diving or involved in other recreational activities around the...

Fire Urchin

Astropyga radiata, the red urchin, fire urchin or false fire urchin spawning into the water. Taken on a night dive on Octopus top reef off Dar es Salaam, Tanzania at 14 meters. As the light hit the urchin it ...
Flower urchin,Toxopneustes pileolus

Stinging Sea Creatures-Flower Urchin

  The Stinging sea Flower urchin, Toxopneustes pileolus may look pretty but it is not something to be touched.  When scuba divers are given their dive briefing and warned to only leave bubbles and n...