Nemertea are a type of flat, elongated animals that live mainly in the ocean, also known as rope worms. They usually live in the sand on the bottom of shallow seas, but can also be found on rocks or algae attachments.
The main characteristics of linear animals include:
1. Slender body: Linear animals have slender bodies and usually have softer bodies.
2. Lack of hard bone structure: They have no endoskeleton or exoskeleton, and their bodies are mainly composed of cells, so they have a certain degree of flexibility.
3. There is a noose: Linear animals have a telescopic and extendable organ called a noose, which is used to capture prey or defend themselves.
4. Marine organisms: They mainly live in the marine environment, and their distribution range includes all ocean areas.
5. Predatory animals: Most linear animals are predatory animals, with small invertebrates as their main food source.
There are many species of linear animals, which are mainly distributed in the sea sand at the bottom of the ocean. Some also appear in shallow intertidal zones or deep sea environments. Due to the wide variety and classification of linear animals, they have certain research value in biology.
animal tags： Nemertea
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