It looks a bit like fish eggs, which can be described as "fresh, tender and slippery", similar to boiled eggs.
Sea urchin, a kind of echinoderms, is an invertebrate living in shallow water. The main feature is that the body is spherical, disc-shaped or heart-shaped, without wrists. Endoskeleton heals with each other to form a solid shell, which can be divided into two subclasses, 22 orders: regular sea urchins and irregular sea urchins.
Sea urchins are generally darker in color, such as green, olive, brown, purple and black. There are more than 900 species belonging to 225 genera. There are about 100 known species and 7,000 fossil species in China.
It is distributed in the intertidal zone to the seabed thousands of meters deep, mostly concentrated in the rocky seabed or sandy seabed in the coastal zone, or widely distributed or limited to specific sea areas, which varies from species to species.
Sea urchin is the earliest model organism used in the history of biological science, and its eggs and embryos play an important role in the development of early developmental biology. It is one of the longest-lived marine life on earth. Most sea urchins like to live in rocks, coral reefs and hard seabed, mainly relying on tube feet and thorns, and exercise is often related to eating.