* Fish have brains, but they are relatively small compared to their body size. They are located in the head and are protected by the skull. The brain of a fish is responsible for controlling its movements, senses, and behavior.
* Whales have very large and complex brains. In fact, some species of whales have the largest brains of any animal on Earth. Their brains are responsible for their complex social interactions, communication, and navigation.
While both fish and whales have brains, the size and complexity of their brains vary greatly depending on the specific species.