
USS Apogon
Bikini Atoll · Marshall Islands
The USS Apogon is a Tench-class submarine sunk during Operation Crossroads, now resting upright on the lagoon floor at 50 meters — one of only a handful of diveable submarines in the world. She sits intact with her conning tower rising to 38 meters, her torpedo tubes still loaded and open, and her interior accessible to technical divers through hatches that remain open after 80 years on the bottom. The compressed scale of a submarine makes every centimeter alive with encrusting coral, sponge, and the surreal juxtaposition of wartime hardware draped in tropical reef.
Conditions
Depth
38 to 52 m
Advanced depths
Current
Usually gentle
Can pick up on the edge
Visibility
20 to 35 m
Clearest in the calm season
Water
27 to 30°C
3mm wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 |
| Vis (m) | 20 | 20 | 25 | 25 | 25 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Current | Gentle | Gentle | Still | Still | Still | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle |
Your chances of seeing each animal
Grey Reef Shark
Expected
Known here, not yet in recent logs
Whitetip Reef Shark
Expected
Known here, not yet in recent logs
Bigeye Trevally
Expected
Known here, not yet in recent logs
Giant Grouper
Expected
Known here, not yet in recent logs
Humphead Wrasse
Expected
Known here, not yet in recent logs
Coral Encrusted Lionfish
Expected
Known here, not yet in recent logs
Encrusting Coral
Expected
Known here, not yet in recent logs
Giant Clam
Expected
Known here, not yet in recent logs
Gear