What is a group of ocean life that includes larger animals swim?

There isn't one specific term for a group of ocean life that includes larger animals that swim. Here are some options depending on what you want to emphasize:

* Pelagic life: This refers to all organisms that live in the water column, from the surface to the ocean floor. It includes both large and small animals, as well as plankton.

* Nekton: This specifically refers to free-swimming aquatic animals that can move independently of ocean currents. This group includes fish, squid, whales, and other larger creatures.

* Marine fauna: This is a broader term that encompasses all animals living in the ocean, from microscopic organisms to the largest whales.

The best term depends on the context of your question. If you're interested in the larger animals specifically, "nekton" might be the most appropriate.