Sea slug brain chemistry reveals a lot about human memory, learning -- Science Nation

As you can imagine, life is not very complicated for sea slugs. They use their brains mainly to find food, avoid becoming food and to reproduce. While the human brain and nervous system are wired with hundreds of billions of nerve cells, or neurons, sea slugs can get by with tens of thousands. ...This is an NSF Multimedia Gallery item.
Source: NSF Multimedia Gallery - Category: Science Source Type: video