Dive-site story
Located off the northwest coast of Dominica near Portsmouth, Secret Arch is defined by a volcanic rock formation that arches over the seafloor. Divers navigate through the open structure, which is encrusted with encrusting sponges, soft corals, and deep gorgonian fans before exploring adjacent coral slopes.
Volcanic swim-through arch formation covered in sponges and cup corals
Sheltered conditions typical of Dominica's leeward Caribbean coast
Macro critters tucked within crevices and along rocky ledges
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Winter and spring offer drier weather and reliable visibility on the leeward side of Dominica.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hawksbill TurtleEretmochelys imbricata | Common | ||||||||||||
| Spotted MorayGymnothorax moringa | Common | ||||||||||||
| Creole WrasseClepticus parrae | Common | ||||||||||||
| Caribbean Spiny LobsterPanulirus argus | Common | ||||||||||||
| TrumpetfishAulostomus maculatus | Common |
Marine forecast
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