| Business | Phone |
| Abyss Dive Center 13175 Overseas Hwy, Marathon 33050 | (305) 743-2126 |
| Hall's Diving Center 1994 Overseas Hwy, Marathon 33050 | (305) 743-5929 |
| Middle Keys Scuba Center 11511 Overseas Hwy, Marathon 33050 | (305) 743-2902 |
| Tilden's Scuba Center 61 Hawks Cay Investors Ltd, Marathon 33050 | (305) 289-4931 |
| Abyss Dive Ctr 13175 Overseas Hwy, Marathon 33050 | (305) 743-2126 |