No. Sea urchins live in the sea.
In 2011, the price of sea urchins varied significantly based on region and market demand, but they typically ranged from $5 to $12 per pound for whole urchins. The value of the roe, or uni, extracted from sea urchins was much higher, often fetching prices between $30 to $60 per pound or more, especially in high-end markets. These prices could fluctuate due to factors such as availability, fishing regulations, and culinary trends.
More sea urchins.
You can't really answer this question because sea urchins have different masses depending on their size. For example, a small sea urchin will have a smaller mass than a big sea urchin.
The classification of a Sea Urchin is Echinoidea
there are excatly 3million purple sea urchins
sea urchins eat kelp.
Echinoderms.
No. Sea urchins are primary consumers and only eat sea weed, algae and kelp.
in the sea
Yes, sea urchins are herbivores because they mainly feed on algae.
Sea urchins reproduce by releasing eggs and sperm into the water, where external fertilization takes place. Once fertilized, the eggs develop into larvae that eventually settle and grow into adult sea urchins. Some species of sea urchins can also reproduce by asexual means, such as splitting or budding.