海胆,为棘剌动物门,海胆纲无脊惟动物。北方俗称海剌锅子,沿海水域均有分布。常栖息在水深4米左右砂砾瓦和藻类繁茂的岩礁间,还可见于水深20米海底。我国沿海已知有60多种,以北方为多。部分品种的卵巢(黄卵块)可供食用,如紫海胆、马粪海胆等。卵巢 Sea urchin, spines for the animal, sea urchin ridgeless animals. Commonly known as the sea in the north of the pot, there are distribution of coastal waters. Often habitat in the depth of about 4 meters of sand and gravel tile and lush algae between the rocks, but also found in the water depth of 20 meters seabed. There are more than 60 kinds of coastal areas in our country, many in the north. Some species of ovaries (yellow egg) for edible, such as purple sea urchin, horse manure and other sea urchins. Ovary