1. Why are sea urchins called sea urchins There are many words about the origin of sea urchins' names, among which the common words are sea urchins in English. Translated into Chinese, he is a naughty boy at home. But in China, people call them sea urchins. This name comes from the theory of traditional Chinese medicine that "gallbladder is the place where essence is". The delicious taste of sea urchins is hidden under their hard shells, and people think that the essence of the sea is the delicious taste of sea urchins, so they are named sea urchins.
Another way of saying it is that sea urchins look like an animal called "gallbladder", and people name them sea urchins according to pictographs. There are also some seahorses, seals, seals, etc. There are many origins of sea urchin names, but they all have different bases.
2. What are sea urchins?Sea urchins are invertebrate animals, which belong to Echinoderms and sea urchins. They generally live in the shallow waters of the ocean, but there are also some special species that live in the deep sea. Their shapes are spherical and heart-shaped. Most of the colors are black, but there are many varieties and colors of sea urchins. They are close relatives with starfish and sea cucumbers. Sea urchins are omnivorous animals, and they usually like to eat some worms, hydra, algae and other foods. They have chewers in their mouths, and chewers are relatively developed.
