| FishBase.org | A huge database of fish species. |
| Coralpedia | Caribbean corals and sponges |
| marinelifephotography.com | Species of Hawaii |
| Sea Slug Forum | Sea slugs and nudibranchs worldwide |
| Reef ID Books Set Humann/Deloach | The standard Reef Fish, Creature and Coral ID books for the Florida, the Caribbean, and Bahamas |