Thailand Local Diving - Hornbill Rocks
Location: Ocean side of Hornbill Hill at end off GBBR.
Type: Coral outcrops and boulders
Depth: 3-10m
Life: Spiny lobster, starry pufferfish, honeycomb whipray, yellow boxfish, nudibranch (chromodoris)
Scientific name: Panulirus vesicolor
Size: Up to 35cm
More: Live in crevices of rocks and coral reefs, only occasionally venturing out at night to seek snails, clams, crabs, sea urchins or carrion to eat. Produce rasping sound to repel predators. Sometimes, they migrate in very large groups in long files of lobsters across the sea floor.
Size: Up to 35cm
More: Live in crevices of rocks and coral reefs, only occasionally venturing out at night to seek snails, clams, crabs, sea urchins or carrion to eat. Produce rasping sound to repel predators. Sometimes, they migrate in very large groups in long files of lobsters across the sea floor.
Scientific name: Arothron stellatus
Size: Up to 120cm
More: Has a white body, covered in numerous small black spots that become relatively smaller and more numerous as the fish grows.It can be found on coral and rocky reefs, also in inshore estuaries amongst sponge gardens and seagrasses. Eats hermit crabs, starfishes, coral, sponges, algae and sea urchins..
Size: Up to 120cm
More: Has a white body, covered in numerous small black spots that become relatively smaller and more numerous as the fish grows.It can be found on coral and rocky reefs, also in inshore estuaries amongst sponge gardens and seagrasses. Eats hermit crabs, starfishes, coral, sponges, algae and sea urchins..
Scientific name: Himantura uarnak
Size: Up to 6m long. 120kg+
More: Large ray characterised by honeycomb reticulations. Lives on the sand near coral reefs. Feeds on benthic fishes and invertebrates. The extremely long tail of the honeycomb stingray is equipped with mechanoreceptors that give it advance warning of approaching predators
Size: Up to 6m long. 120kg+
More: Large ray characterised by honeycomb reticulations. Lives on the sand near coral reefs. Feeds on benthic fishes and invertebrates. The extremely long tail of the honeycomb stingray is equipped with mechanoreceptors that give it advance warning of approaching predators
Scientific name: Ostracion cubicus
Size: Up to 45cm
More: Juveniles bright yellow with black spots; the spots decrease proportionately and the bright yellow becomes a dirty mustard with growth. Inhabit lagoon and semi-sheltered seaward reefs. Feeds mainly on algae, molluscs and sponges within sheltered reefs. Boxfishes can release toxins when attacked.
Size: Up to 45cm
More: Juveniles bright yellow with black spots; the spots decrease proportionately and the bright yellow becomes a dirty mustard with growth. Inhabit lagoon and semi-sheltered seaward reefs. Feeds mainly on algae, molluscs and sponges within sheltered reefs. Boxfishes can release toxins when attacked.
Scientific name: Chromodoris Geminus
Size: Up to 6cm
More: Uncommon and moves in an unusual way, as it flaps its mantel edge up and down as it moves along.Has large purple spots or marks, usually ringed with white. Has four colour bands around the mantle edge, an outermost white, then translucent greyish purple, then white, then yellow. Feeds on sponges.
Size: Up to 6cm
More: Uncommon and moves in an unusual way, as it flaps its mantel edge up and down as it moves along.Has large purple spots or marks, usually ringed with white. Has four colour bands around the mantle edge, an outermost white, then translucent greyish purple, then white, then yellow. Feeds on sponges.





