Sea cucumber is a common organism, which is easy to see in our daily life.According to its category, sea cucumber belongs to the genus Holothurian of the phylum Echinodermata, so it is an animal, not a plant.Specifically, sea cucumber belongs to echinoderm, and it is an echinoderm with a very long history.As an echinoderm, sea cucumbers also conform to the basic characteristics of echinoderms.For example, echinoderms basically live in the ocean, and sea cucumbers also live in the ocean; The external body structure of echinoderms is quite special, generally without a head, sea cucumbers are the same; From the internal structure of the body, the digestive tract of echinoderms is mostly very short, and sea cucumbers also conform to this feature.
If sea cucumbers are divided from their living environment, they can be divided into marine animals, because the living environment of sea cucumbers is the ocean.Specifically, sea cucumber is widely distributed in the world's oceans.Especially in the western Pacific region, there are a lot of sea cucumbers.There are also some sea cucumbers in China, some of which are edible.
As mentioned above, if sea cucumbers are classified according to their living environment, they can be divided into marine animals, which live in the ocean.In fact, the name of the sea cucumber with the word "sea", so living in the ocean is very easy to understand.In fact, echinoderms are basically living in the ocean, sea cucumber as an echinoderm, is no exception.Sea cucumber is widely distributed in the world's sea areas, especially in the Pacific Ocean.
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