Let's come up with an amphibian race!

My friend and I wanted to submit such a clan for the contest, but we didn't have time. Here are our ideas:
Atlantis.
1. Marlok - Marlok Warrior.
2. Mermaid - Siren.
3. Naga - Fierce Naga.
4. Seahorse - Warhorse.
5. Sea Hydra - Ocean Hydra.
6. Water Riders - Riders of Atlantis.
7. Sea Monster - Leliaphant.