1. Marine life includes fish, dolphins, and whales.
海洋生物包括鱼类、海豚和鲸鱼。
2. Marine ecosystems are very complex.
海洋生态系统非常复杂。
3. Marine animals need to adapt to saltwater environments.
海洋动物需要适应盐水环境。
4. Marine environments are habitats for many species.
海洋环境是许多物种的栖息地。
5. Marine biodiversity is very high.
海洋生物的多样性很高。