Eden Rock & Devil's Grotto
Location guideStingray City

Eden Rock & Devil's Grotto

415 mopen water+geologycoral○ Out of season

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Hotels, dive operators, gear, and how to get here are on the Stingray City location page.

Overview

Twin limestone formations off George Town's South Church Street that rise from a sand floor to within a metre of the surface, riddled with caverns, tunnels and skylight chambers where shafts of sunlight cut through the dark interior. In summer a dense silver curtain of silversides packs the chambers, hunted by resident Atlantic tarpon in lunging attacks that scatter the schools into swirling clouds. Caribbean reef squid hover at the entrances and great barracuda patrol the perimeter, all in clear water that rarely runs more than a gentle drift. Depths of 4 to 15 m make this the most dived shore site on Grand Cayman.

Briefing note

Inside the George Town port zone; check the daily cruise ship schedule before diving, as boat traffic above the site is heavy when ships are berthed. The silversides aggregation is a summer phenomenon (roughly June through September) and is the reason most divers pick this site over Cayman's offshore walls. Avoid touching or chasing the tarpon, which feed naturally through the schools.

What you'll see

7 species curated
  • Atlantic tarpon
    seasonal
    Peak: Jun · Jul · Aug · Sep
  • Hardhead silverside
    seasonal
    Peak: Jun · Jul · Aug · Sep
  • Great barracuda
    year-round
  • Caribbean reef squid
    year-round
  • French angelfish
    year-round
  • Bermuda chub
    year-round
  • Green sea turtle
    year-round

Reef data for this area

Jurisdiction-level snapshots

Current mean coral cover

22%in 2018

Earlier survey

26%in 2012

-4 pts

AGRRA Caribbean benthic transects across Grand Cayman, Little Cayman, Cayman Brac. Little Cayman (Bloody Bay) historically among the highest cover in the region.

Reported at the jurisdictionscale, not the dive site — the published surveys don’t resolve a single reef. AGRRA Cayman Islands country report

Conditions

MonthWaterVisibilityCurrent
Jan2627 °C2535 mnone
Feb2627 °C2535 mnone
Mar2627 °C2535 mnone
Apr2728 °C2535 mnone
May2829 °C2030 mnone
Jun2830 °C2030 mmild
Jul2930 °C2030 mmild
Aug2930 °C1828 mmild
Sep2930 °C1828 mmild
Oct2829 °C1828 mmild
Nov2728 °C2030 mnone
Dec2728 °C2535 mnone

Season calendar

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Peak season highlighted · current month outlined

Gear for this site

Beyond the basic kit
  • Primary dive lightThe caverns and tunnel chambers go dark even at midday; a torch lets you see structure and pick out silversides packed into the ceiling pockets.
  • SMBCruise ship tenders and snorkel boats work the surface above the site through the day; a marker is essential before ascent.

Next step

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