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Hotels, dive operators, gear, and how to get here are on the Ari Atoll location page.
Overview
The reefs surrounding Puerto Rico offer diverse diving experiences, from vibrant shallow coral gardens to dramatic wall dives. Expect to encounter a variety of hard and soft corals, home to an array of colorful reef fish and invertebrates, characteristic of the wider Caribbean marine ecosystem.
What you'll see
3 species curated- year-roundHawksbill Sea TurtlePeak: Jan · Feb · Mar · Apr · May · Jun · Jul · Aug · Sep · Oct · Nov · Dec
- year-roundNurse SharkPeak: Jan · Feb · Mar · Apr · May · Jun · Jul · Aug · Sep · Oct · Nov · Dec
- year-roundCaribbean Spiny LobsterPeak: Jan · Feb · Mar · Apr · May · Jun · Jul · Aug · Sep · Oct · Nov · Dec
Sightings evidence
3 records on file- medium confidenceHawksbill Sea Turtle
- Last confirmed
- Jun 2024
- Recent records
- 15 within 25 km
- Cluster months
- Year-round
- medium confidenceNurse Shark
- Last confirmed
- May 2024
- Recent records
- 10 within 25 km
- Cluster months
- Year-round
- medium confidenceCaribbean Spiny Lobster
- Last confirmed
- Jul 2024
- Recent records
- 20 within 25 km
- Cluster months
- Year-round
Sources & methodology
How we summarise this
We aggregate confirmed occurrence records from GBIF and OBIS within a fixed radius of each dive site. Occurrence records confirm presence and reveal seasonality clustering, but they DO NOT measure per-dive probability — there is no eligible-effort denominator. We deliberately do not publish a numeric '% chance of sighting' from this data.
Sources
- Global Biodiversity Information Facility — GBIF Secretariat
- Ocean Biodiversity Information System — IOC-UNESCO
- OBIS-SEAMAP — Duke University Marine Geospatial Ecology Lab / OBIS
- iNaturalist — California Academy of Sciences & National Geographic Society
- IUCN Red List of Threatened Species — International Union for Conservation of Nature
- WoRMS — World Register of Marine Species — Flanders Marine Institute (VLIZ)
- FishBase — FishBase Consortium
- Atlas of Living Australia — CSIRO / GBIF Australia
- REEF Volunteer Fish Survey — Reef Environmental Education Foundation
Conditions
| Month | Water | Visibility | Current |
|---|---|---|---|
| Jan | 25–27 °C | 15–25 m | mild |
| Feb | 25–27 °C | 15–25 m | mild |
| Mar | 25–27 °C | 15–25 m | mild |
| Apr | 26–28 °C | 15–25 m | mild |
| May | 26–28 °C | 15–25 m | mild |
| Jun | 27–29 °C | 15–25 m | mild |
| Jul | 27–29 °C | 15–25 m | mild |
| Aug | 28–30 °C | 15–25 m | mild |
| Sep | 28–30 °C | 15–25 m | mild |
| Oct | 27–29 °C | 15–25 m | mild |
| Nov | 26–28 °C | 15–25 m | mild |
| Dec | 25–27 °C | 15–25 m | mild |
Season calendar
Next step
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