The smallest of the underwater habitats, and just a little bit smaller than the Lagoon, with entry in one of the corners. Feeder tube works with this model as well. For use with any size tank.

The Underwater Island is the biggest of them all with a river running through the middle of the habitat. Ideal for tanks 10 gallons and bigger.

One size up from the Cove, The Underwater Lagoon has a pool in the middle where the crabs and other critters can climb up to get to the dry land.

Great for small fish tanks with one or two small crabs. Use with the optional feeder tube to put food directly on dry land.