Anthozoa

例句：

1. 1. Anthozoa is a group of animals that lack backbones and have no internal organs.
   无脊椎动物是一类没有脊柱和内脏的动物。
2. 2.Anthozoa are found in various ocean habitats, including coral reefs and deep-sea trenches.
   无脊椎动物分布在各种海洋环境中，包括珊瑚礁和深海沟。
3. 3.Anthozoans are known for their unique adaptations to their environments, such as the ability to breathe through gills.
   无脊椎动物因其对环境的适应而闻名，如通过鳃呼吸的能力。