Siladen Island
Manado · Indonesia
A small, forested island on the northeastern edge of Bunaken National Marine Park, Siladen is the region's premier macro destination with rubble slopes and coral gardens teeming with nudibranchs, ghost pipefish, and at least two species of pygmy seahorse. Its protected lagoon hosts nightly congregations of mandarinfish performing their courtship display just after sunset. The walls on the seaward side offer a dramatic contrast, dropping steeply through sea fan gardens that attract barracuda schools and the occasional thresher shark.
Conditions
Depth
3 to 30 m
Open water and up
Current
Usually gentle
Can pick up on the edge
Visibility
20 to 30 m
Clearest in the calm season
Water
26 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 | 27 | 26 | 26 | 27 | 27 | 27 | 27 |
| Vis (m) | 10 | 10 | 15 | 15 | 20 | 20 | 20 | 20 | 15 | 12 | 10 | 10 |
| Current | Gentle | Gentle | Still | Still | Still | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle |
Your chances of seeing each animal
Green Sea Turtle
Last confirmed Jun 2, 2026 · 98 records
Almost always
Nearly every dive
Alcala'S Chromodoris
Last confirmed May 17, 2026 · 54 records
Almost always
Nearly every dive
Anna'S Chromodoris
Last confirmed May 20, 2026 · 53 records
Almost always
Nearly every dive
Redtooth Triggerfish
Last confirmed Jun 2, 2026 · 44 records
Almost always
Nearly every dive
Robust ghost pipefish
Last confirmed May 12, 2026 · 3 records
Likely
About 6 in 10 dives
Mandarin dragonet
Expected
Known here, not yet in recent logs
Denise's pygmy seahorse
Expected
Known here, not yet in recent logs
Chromodoris nudibranch
Expected
Known here, not yet in recent logs
Gear