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Big Rock

Utila, Bay Islands, Honduras · 8–25m · beginner · semi

South-shore reef with a prominent coral boulder.

Conditions today

Retrieved · refreshed hourly

marginal

Marginal — 0.4m effective waves made worse by short-period chop.

Limiting factor: period

Wave height
0.4–0.8m
Wave period
3.7–4.9s
Wind chop
0–0.7m
Sea temp
29.9–30.5°C

Ranges span today's hours. Wave height here is the raw sea state — the rating scales it for how exposed the site is. Semi-exposed — partial protection, so swell is scored at three-quarters of its open-water height.

Next few days

  • TodayMarginal — 0.4m effective waves made worse by short-period chop.marginal
  • SundayExcellent — calm morning with 0.3m effective waves.excellent
  • MondayExcellent — calm morning with 0.3m effective waves.excellent

Each day is scored over its morning dive window, the same as today's rating.

Dive briefing

AI-generated

Conditions are marginal today. Raw wave heights run 0.4–0.8m, but short-period chop will make the reef feel rougher than those numbers suggest. You're looking at 29.9–30.5°C water and depths from 8 to 25 metres across the south-shore reef and its coral boulder. This is a beginner site, and the semi-exposed location means you'll feel the sea state, so factor that into your planning.

Divers commonly log stoplight parrotfish and spotted eagle rays here, along with schoolmaster snapper and hawksbill sea turtles. Atlantic blue tangs, queen angelfish, Caribbean blueheads, and western Atlantic trumpetfish are often recorded as well. The reef structure and marine life are there for you; conditions just mean you'll need to work a little harder to enjoy them.

Written by Claude (claude-haiku-4-5-20251001) from the rating, forecast, and sightings on this page — it has no other source and cannot look anything up. Treat it as a summary, not as local knowledge.

Commonly seen here

Most-recorded species near this site, ranked by research-grade iNaturalist sightings from divers, snorkelers, and naturalists.

Species come from iNaturalist — research-grade sightings logged by divers, snorkelers, and naturalists nearby. The ranking reflects what people photograph most, not guaranteed abundance. Ask a local operator what's actually being seen. Species names link to iNaturalist for range maps, seasonality and more photos. Photos by iNaturalist contributors under Creative Commons licences — individual credit on hover.

Other sites nearby

Within 25km, closest first — usually the same day's boat.