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Sharing the beauty, facts, and stories from the Great Barrier Reef World Heritage Area đ€ż Queensland - Australia #masterreefguides
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Recent posts
Mission: swap the shark receiver.
Sharks are on the move, and researchers are keeping track. But how do you follow a shark that can travel hundreds of kilometres?
One way is with underwater acoustic receivers. These little devices listen out for signals from tagged sharks as they swim past, helping researchers build a picture of where they go and how they use the Reef.
@gbrbiology Site Stewardship team recently joined @biopixeloceans at Green Island to replace one of eight receivers they look after across their Cairns and Port Douglas sites.
Itâs one of the ways the Master Reef Guides get involved in the research happening across the Great Barrier Reef, working alongside scientists to keep valuable data coming in.
đ Green Island, Gunggandji Sea Country
đ„ @gbrbiology Marine Biologist @floor_soup_
#shark #greatbarrierreef
10 Nov 2026
be a good guest.
Weâre visitors in their world, so give wildlife the space to simply be.
đ Mackay Reef with @oceansafaricapetrib
#greatbarrierreef #shark #nature
09 Nov 2026
The Reefâs Looking Glass
Glass bottom boats are a great way to see whatâs happening beneath the surface without even getting wet.
And if youâre joining a tour led by a Master Reef Guide, youâre in for an even better experience! Master Reef Guides love sharing their knowledge of the Reef, pointing out wildlife you might otherwise miss and telling you a little more about what youâre seeing below.
Come join a tour next time.
đ Green Island with @greatadventurescruises
Tour led by Master Reef Guide Bekki
Featuring @gbrmarinepark Reef Guardian School
#greatbarrierreef #oceanlife #nature
07 Nov 2026
A little bit of everything, all living together.
Different shapes, colours, patterns and personalities, all playing their part in the life of the Reef.
The beauty and importance of biodiversity.
đž Master Reef Guide Steven @i.am.animal
đ @heronisland
06 Nov 2026
incredible conditions at Green Island today
Looking for a sign to visit the Great Barrier Reef? This is it!
đ Green Island with @greatadventurescruises
@gbrmarinepark Reef Guardian School trip
#greatbarrierreef #nature
05 Nov 2026
Pretty in pink and blue đđ
Parrotfish are more than just pretty faces! They keep the Reef healthy by grazing on algae, giving corals room to grow and even producing the beautiful white sand we love.
đ Agincourt Reef with @quicksilvercruises
#greatbarrierreef #nature
03 Nov 2026
hang in there!
Some days, just hanging in there is an achievement in itself. And thatâs enough.
Go little slug, go đ«¶
đ„ @jovlogsss
Species: Slender Sap Sucking Slug (Thuridilla gracilis)
#greatbarrierreef #oceanlife #nature
02 Nov 2026
When rays on the menuâŠ
This Moray eel did pretty well for itself, managing to catch a Blue spotted Ray for its next meal.
The Reef isnât just about the cute and colourful like nemos and turtles. Thereâs a whole wild side happening beneath the surface, and sometimes you get a front row seat to it.
đ„ @carlosrodriguez_photo with @divers_den
#greatbarrierreef #wildlife
31 Oct 2026
Double trouble đ»
Two stonefish, one very fitting Halloween look.
Happy Halloween đ
đ„ Master Reef Guide @pablocogollos_photography
#greatbarrierreef #halloween
30 Oct 2026
Can you snorkel through spawn slicks? Yes, though itâs often nicer to avoid it.
Itâs not long now until the Great Barrier Reefâs mass synchronised coral spawning event, and with that comes these âspawning slicksâ. When you visit the Reef this month or next, you might see them.
Theyâre completely harmless, made up of millions of coral eggs and sperm bundles drifting on the surface, waiting to create new life. The water can look cloudy and we are not going to lie, it can be stinky, but itâs all part of the Reefâs incredible natural event and we love seeing them.
So yes, you can snorkel through it gently if you really want, but we recommend swimming around it instead, this keeps the slick nicely undisturbed. And if itâs not your thing, donât worry the current will carry it away soon enough. Either way, you just got to witness new life beginning on the Reef, an experience that not many people ever get to see.
P.S. Some slicks you see may actually be a Trichodesmium bloom, a floating, algae like film that can look a lot like coral spawn. Itâs easy to confuse the two. If youâre unsure, just ask a Master Reef Guide, theyâll help you tell the difference and explain whatâs happening on the Reef.
#greatbarrierreef #nature
30 Oct 2026
The baby boom; Itâs not just corals that spawn.
Brittle stars, Sea cucumbers, Giant Clams and plenty of other marine animals have their own reproductive parties happening underwater. Some time it during the mass synchronised spawning event, while others do their own thing at different times of the year.
The Reefâs a pretty busy place when it comes to making babies.
đ„:
Brittle Sea star: @dani.raco.s
Sea Cucumber and clam: Master Reef Guide @mish_loves_fish
#greatbarrierreef #nature
28 Oct 2026
Shark and ray party
Heron Island, shark bay, on the Southern Great Barrier Reef is experiencing the usual spring gatherings.
This is all part of why Heron Reef is recognised as an Important Shark and Ray Area. Of course the aggregations and sightings of sharks and rays like this is a daily occurrence, but the baby sharks and rays are more common of our spring and summer đ„°
100âs of cow tail rays, big lemon shark, baby lemon shark, baby black tip reef sharks, and baby giant shovelnose rays đ
Lots of mating activity being seen from the sharks and rays, the usual large whitespotted eagle rays are also around and doing their courting.
And of course 1000âs of sea birds.
Post by Master Reef Guide Elliot @masterreefpanda
đ @heronisland
#greatbarrierreef #sharks #wildlife
28 Oct 2026
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