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Hotels, dive operators, gear, and how to get here are on the Ari Atoll location page.
Overview
The Ross Sea, a deep bay in the Southern Ocean, offers a unique and challenging polar diving experience. Divers encounter a pristine underwater wilderness defined by towering ice formations, nutrient-rich waters supporting abundant marine life, and extreme cold. It's a realm of incredible biodiversity and a vital ecosystem.
Briefing note
Extreme cold water diving requires specialized training and equipment. Access is typically via scientific expeditions or specialized polar diving liveaboards during the austral summer.
What you'll see
3 species curated- seasonalAdélie PenguinPeak: Nov · Dec · Jan · Feb · Mar
- year-roundWeddell SealPeak: Nov · Dec · Jan · Feb · Mar
- year-roundAntarctic Toothfish
Sightings evidence
3 records on file- high confidenceAdélie Penguin
- Last confirmed
- No confirmed record on file
- Recent records
- 0 within 25 km
- Cluster months
- Nov, Dec, Jan, Feb, Mar
Assumed presence and seasonality based on general knowledge of Adélie penguin distribution in the Ross Sea.
- high confidenceWeddell Seal
- Last confirmed
- No confirmed record on file
- Recent records
- 0 within 25 km
- Cluster months
- Year-round
Assumed presence and year-round seasonality based on general knowledge of Weddell seal distribution in the Ross Sea.
- medium confidenceAntarctic Toothfish
- Last confirmed
- No confirmed record on file
- Recent records
- 0 within 25 km
Assumed presence based on its known role in the Ross Sea ecosystem. Seasonality not specified for diving encounters.
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 We deliberately do not publish a numeric '% chance of sighting' from this data.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 | -1–2 °C | 10–30 m | mild |
| Feb | -1–2 °C | 10–30 m | mild |
| Mar | -1–2 °C | 10–30 m | mild |
| Apr | -1–2 °C | 10–30 m | mild |
| May | -1–2 °C | 10–30 m | mild |
| Jun | -1–2 °C | 10–30 m | mild |
| Jul | -1–2 °C | 10–30 m | mild |
| Aug | -1–2 °C | 10–30 m | mild |
| Sep | -1–2 °C | 10–30 m | mild |
| Oct | -1–2 °C | 10–30 m | mild |
| Nov | -1–2 °C | 10–30 m | mild |
| Dec | -1–2 °C | 10–30 m | mild |
Season calendar
Peak season highlighted · current month outlined
Next step
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