Azarius
From Tardis Wiki, the free Doctor Who reference
The aquatic world of the planet Azarius was home to an advanced species of aquatic creatures. They were technologically advanced, and had a desire to protect the ecological balance of their world. They constructed giant whale-like bio-bots to harvest the fish from the sea, which were designed to meet their needs as well as maintain the balance of life under the water. (COMIC: Whale Tale)
