Endeavour Reef - Great Barrier Reef

Grecian Rocks is one of those Florida Keys sites that often gets overlooked for its flashier neighbors, but we’re here to tell you it’s a mistake to skip it. This place is a classic, shallow reef dive, perfect for stretching out a tank and just soaking it all in. We often point new divers here, but honestly, it’s a fantastic refresh for anyone who enjoys a relaxed dive with plenty to see without battling current. What we really love about Grecian is the sheer variety of small stuff. You can spend an entire dive in one small area, spotting little sand gobies darting into their holes, or a shy Florida blenny peeking out from a crevice. Look closely and you’ll find coney and hamlets tucked in the coral, and we’ve seen some surprisingly robust schools of French grunts congregating under ledges. The ridged cactus coral and pointed pencil coral create some interesting textures, and the way the light filters through the shallows makes everything feel incredibly vibrant. Keep an eye out for Atlantic yellow cowries; they’re often tucked into the nooks, a lovely splash of color against the rock. Our best tip? Go slow. The beauty here is in the details.

Location: Great Barrier Reef, Australia, Australasia
Coordinates: -15.778000, 145.581000
Type: reef

Marine Protected Area: Annan River

Best Time to Dive in Great Barrier Reef

The warmest water temperatures in Great Barrier Reef occur in February, averaging 29.5°C. The coolest conditions are in August at 25.0°C.

Monthly Water Temperatures

January: 29.4°C
February: 29.5°C
March: 29.2°C
April: 28.4°C
May: 26.9°C
June: 25.8°C
July: 25.1°C
August: 25.0°C
September: 25.4°C
October: 26.6°C
November: 27.7°C
December: 29.0°C

Nearest Dive Centres to Endeavour Reef

Marine Life in Great Barrier Reef

Home to 163 recorded species including 88 reef fish, 61 hard corals, 9 seagrass & algae, 2 sharks & rays, 1 starfish, 1 sea snails & nudibranchs.

Notable Species

thalassia (Thalassia hemprichii) - Seagrass & Algae
halodule (Halodule uninervis) - Seagrass & Algae
cymodocea (Cymodocea rotundata) - Seagrass & Algae
Great hammerhead (Sphyrna mokarran) - Sharks & Rays
Bullethead Parrotfish (Chlorurus sordidus) - Reef Fish
seagrass (Halophila ovalis) - Seagrass & Algae
Cauliflower coral (Pocillopora damicornis) - Hard Corals
Lineated Butterflyfish (Chaetodon trifasciatus) - Reef Fish
Dusky Parrotfish (Scarus niger) - Reef Fish
Blackspot Surgeonfish (Acanthurus nigrofuscus) - Reef Fish
Bird wrasse (Gomphosus varius) - Reef Fish
Blue-lined Tang (Zebrasoma scopas) - Reef Fish
Telescopefish (Epibulus insidiator) - Reef Fish
Banded thicklip (Hemigymnus fasciatus) - Reef Fish
Fluorescence grass coral (Galaxea fascicularis) - Hard Corals
Blunt-head Parrotfish (Chlorurus microrhinos) - Reef Fish
Staghorn coral (Acropora hyacinthus) - Hard Corals
Chameleon Parrotfish (Scarus chameleon) - Reef Fish
Citron Butterfly (Chaetodon citrinellus) - Reef Fish
Black-back Butterflyfish (Chaetodon melannotus) - Reef Fish

Recommended Packing List for Endeavour Reef

Based on average water temperature of 27.3°C, currents 17 cm/s.

Shorty or Rashguard - warm 27°C water needs minimal exposure protection
Mask - essential for every dive
Fins
BCD - buoyancy compensator
Regulator - your most safety-critical piece of gear
Dive Computer - tracks depth, time, and NDL
Surface Marker Buoy (SMB) - essential for boat pickups
Dive Torch - useful for crevices and colour at depth
Underwater Camera - capture your diving memories