The term for animals that swim in the ocean is "marine animals." This category includes a wide range of species such as fish, whales, dolphins, sharks, sea turtles, and many more. Marine animals are adapted to life in saltwater environments and play crucial roles in marine ecosystems. They contribute to the biodiversity of the oceans and have significant impacts on food webs and ecological balance. Many marine animals exhibit unique adaptations, such as streamlined bodies for swimming or specialized respiratory systems for breathing underwater. They are essential to human life, providing resources like food and contributing to recreational and economic activities.