Definition
A marine animal is any animal that lives in the ocean or saltwater environment 🐠. This includes a vast array of creatures, from tiny plankton to massive whales. They've adapted to survive in saltwater, often with specialized features like gills or streamlined bodies. Unlike freshwater animals, marine animals have to regulate their salt intake. Think of it as living in a giant, salty soup! They are a crucial part of the ocean's ecosystem.