Echinothrix diadema – Black Sea Urchin (Wana): This species is closely related and therefor similar to the last, but more common. There are nearly 200 different species of recognised sea urchin, that come in all shapes and sizes. Uni Roe is actually the edible part of the Sea Urchin. Its coloration is black in adulthood, but younger specimens also bear bands on their spines, and often share the green hues of their relatives, so the two species are often mistaken for each other at a young age. All species are native to Australia, but in some areas numbers have dramatically increased due to warming waters as a result of climate change and overfishing of urchin predators. Size of sea urchin only around 4-5 inch (the largest can reach 14 inch) and 95% their body is spine. This species has been linked to changes in abalone populations. These urchins have magnificent coloration, but they can deliver a venomous sting equivalent to that of a bee sting. Sea Urchin. In some places, population densities reach … To date more than 800 species of sea urchins have been found. $40.00 / tray. 1. Kina are widespread along New Zealand coasts down to 50 metres, with the main concentrations found between the sub-tidal zone and 15 metres. Different sea urchin species are applied in ecotoxicity studies, with Paracentrotus lividus and Arbacia punctulate seemingly being the most frequently used in research studies. Out of season . Total: $0.00 . Introduction. Sea Urchins are commonly found along the rocky ocean floor in both shallow and deeper water and are also commonly found inhabiting coral reefs. 1998), NW Atlantic (Steneck et al. It feeds by grazing on seaweed, sponges and bryozoans and will also eat barnacles, mussels and worms. Description: One of the more rare varieties of Urchins the Lonspine Rainbow Fire Urchin, False Fire Urchin,the Radiating Hatpin Urchin or Blue Spotted Urchin (Astropyga radiata) is a species of sea urchin belonging to the family Diadematidae. After all, sea urchin eat kelp, so the quality of kelp directly affects the quality of the sea urchin. Length of the spine are around 1-3 cm in length, 1-2 mm thick (less or more) and also has poison inside them. They come in a wide variety of colors, shapes, and sizes. The Spiny Sea Urchin is usually found in large numbers and affects the ecology of the reef by clearing areas of kelp, causing barren areas known as white rock.

The easiest way to describe a sea urchin of any species is “ball of spines.” Most species resemble a pincushion filled to the brim with needles. The aim and contents of this portal, as well as the lastest updates, are treated in detail under about this site. Thick and creamy in texture, Santa Barbara uni is much larger in size than its counterparts. 130g Container. Sea urchins are marine invertebrates of the phylum Echinodermata which live on the ocean floor. The sea urchin is found across the ocean floors worldwide, but rarely in the colder, polar regions.Sea urchins are commonly found along the rocky ocean floor in both shallow and deeper water and sea urchins are also commonly found inhabiting coral reefs..