
Valley of the Rays
Manta Ridge · Federated States of Micronesia
Wide sandy channel where mantas congregate during mating season — trains of suitors follow females in long courtship displays. Mating bottom passes happen meters above your head. October through April is peak.
Conditions
Depth
5 to 20 m
Open water and up
Current
Can be moderate
Can pick up on the edge
Visibility
15 to 25 m
Clearest in the calm season
Water
27 to 30°C
Tropical 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 | 28 | 27 |
| Vis (m) | 15 | 15 | 15 | 20 | 20 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Current | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
Your chances of seeing each animal
Reef manta ray
Last confirmed Apr 15, 2026 · 45 records
Very likely
Most dives
Mandarinfish
Last confirmed Jul 1, 2025 · 1 records
Rare
Now and then
Yap Monarch
Last confirmed Dec 17, 2024 · 1 records
Rare
Now and then
Eagle ray
Expected
Known here, not yet in recent logs
Spotted ray
Expected
Known here, not yet in recent logs
Blacktip Reef Shark
Expected
Known here, not yet in recent logs
Reticulated Damselfish
Expected
Known here, not yet in recent logs
Pacific Bullethead Parrotfish
Expected
Known here, not yet in recent logs
Gear