1. Many of the pelagic species in the ocean migrate to different areas throughout the year.
许多海洋中的大洋鱼类每年都会迁徙到不同的区域。

2. The unique pelagic plants found in the water bodies exhibit fascinating adaptations.
在水体中发现的独特的水生植物展示了令人着迷的适应性。

3. The pelagic sediments provide valuable information about the ancient oceanic environment.
大洋中的海洋沉积物提供了有关古代海洋环境的宝贵信息。