
Hamasakishita
Tateyama / Sagami Bay · Japan
Hamasakishita is a sheltered shore dive site on the Tateyama waterfront, a gently sloping sand and rubble bottom from 3 to 18 metres that functions as prime nursery habitat for juvenile fish and invertebrates. The site is renowned for the density and variety of frogfish species found on sponges and encrusted boulders across the shallows, with painted, warty, and hairy frogfish all recorded in a single dive on good days. Ghost pipefish appear seasonally in the seagrass patches, and the night dive reveals an entirely different community including spider crabs, flatworms, and feeding cephalopods. The sheltered bay position makes this a reliable dive in almost any weather.
Conditions
Depth
3 to 18 m
Good for beginners
Current
Usually still
Can pick up on the edge
Visibility
4 to 8 m
Clearest in the calm season
Water
12 to 26°C
3mm wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 13 | 12 | 13 | 15 | 17 | 19 | 21 | 22 | 21 | 18 | 15 | 13 |
| Vis (m) | 6 | 8 | 8 | 6 | 5 | 4 | 4 | 3 | 4 | 6 | 6 | 6 |
| Current | Still | Still | Still | Still | Still | Still | Still | Still | Still | Still | Still | Still |
Your chances of seeing each animal
Warty Frogfish
Last confirmed Dec 29, 2024 · 1 records
Likely
About 6 in 10 dives
Hairy Frogfish
Last confirmed Jul 25, 2025 · 1 records
Likely
About 6 in 10 dives
Painted Frogfish
Expected
Known here, not yet in recent logs
Japanese Shrimpgoby
Expected
Known here, not yet in recent logs
Mosaic Lizardfish
Expected
Known here, not yet in recent logs
Spoon Worm (various species)
Expected
Known here, not yet in recent logs
Ghost Pipefish
Expected
Known here, not yet in recent logs
Japanese Spider Crab
Expected
Known here, not yet in recent logs
Gear