Syncarida

例句：

1. 1. The Syncarida are fascinating creatures that can change color and shape to blend in with their environment.
   水螅是一种迷人的生物，它们可以改变颜色和形状以适应环境。
2. 2. In the ocean, Syncarida play a crucial role in nutrient cycling.
   在海洋中，水螅在营养循环中起着至关重要的作用。
3. 3. Syncarida are found in various marine habitats, including coral reefs and deep-sea trenches.
   水螅分布在各种海洋栖息地，包括珊瑚礁和深海沟壑。