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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 — 0.6m effective waves made worse by short-period chop.

Limiting factor: period

Wave height
0.7–1.1m
Wave period
4.6–5.7s
Wind chop
0–0.9m
Sea temp
28.7–29.3°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 — 0.6m effective waves made worse by short-period chop.marginal
  • FridayMarginal — 0.4m effective waves made worse by short-period chop.marginal
  • SaturdayMarginal — 0.4m effective waves made worse by short-period chop.marginal

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

Dive briefing

AI-generated

Conditions are marginal today. Waves are running 0.7–1.1m with short-period chop that will make for a lumpy dive. The rating reflects 0.6m effective waves made worse by the brief swell period. You're looking at beginner-level depths between 8 and 25 metres on a semi-exposed reef, so you'll feel the chop more than on a sheltered site. Water sits at 28.7–29.3°C.

Divers commonly log blue land crabs, stoplight parrotfish, spotted eagle rays, and Caribbean land hermit crabs here. Hawksbill sea turtles, schoolmaster snapper, Atlantic blue tang, and western Atlantic trumpetfish are often recorded too. It's a productive reef, but plan your entry and exit carefully given today's sea state.

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.