Bluespotted Maskray
Neotrygon kuhlii
Photo by Lisa Georgiou, 2016
Gnaraloo lagoons are home to the aptly named bluespotted maskray. They can be found in coastal and estuarine waters, often foraging in shallow sandy areas and may find shelter beneath ledges and in caves. Unlike most other stingray species, bluespotted maskrays rarely bury themselves in the sand. Ray populations are at risk in many areas due to their dependence on coral reef habitats which are subject to negative human impacts, such as the destruction of coral and pollution from fertilizers. They are also exploited in some areas for commercial sale. Watch out for the two venomous spines on the tail! Although they do not typically display aggression and are nice to look at, bluespotted maskrays are very venomous and can cause extreme pain.
Painted Moray
Gymnothorax pictus
Photo by Simone Bosshard, 2017
The painted moray, also known as the peppered moray, can be found in tropical marine waters around the Indo-Pacific, including Australia and around nearby islands. These eels can grow to be around 1.2 m in length and are white to pale grey in colour, with fine black speckles that accumulate with age, sometimes joining together to form diffuse splotches. They primarily like to inhabit shallow reef flats and rocky intertidal shores, sometimes taking shelter underneath rocks and between crevices. Painted morays have a diet primarily consisting of crustaceans but will occasionally eat fish as well. They have been known to leave the water, sometimes even leaping from the surface, to catch crabs perched on the rocks nearby.
Western Shovelnose Ray
Aptychotrema vincentiana
Photo by Heather Shipp, 2018
Debates persist on this wacky creature’s heritage but science concludes it is not a fish or a shark, but a ray! The Western Shovelnose Ray has multiple common names including the Shovelnose Shark, Guitarfish, Southern Shovelnose Ray, and Yellow Shovelnose Ray. They are endemic to Australia and are usually found near the shore, inhabiting shallow bays off Western Australia and South Australia. Western shovelnose rays may reach up to about 1 metre in length and can be recognized by their long triangular snout, elongated body, and a shark-like tail. They are usually a yellowish-brown colour often with cloudy blotches and a brown ‘mask’ around the eyes.
Whitetip Reef Shark
Triaenodon obesus
Photo by Simone Bosshard, 2018
As their name suggests, whitetip reef sharks live and feed along the reef, resting in aggregations during the day and feeding at night. The majority of their diet includes octopi, lobster, crustaceans and bony fish. Whitetip reef sharks hunt these species by chasing them into crevices along the reef and jamming their head in the holes to seal the exit. Because of this feeding behaviour, these sharks have adapted a more elongated region between the tip of the snout and the first dorsal fin to allow for deeper access into coral openings. Thankfully these beauties have a docile temperament, making them safe swimming companions!
Banded Humbug
Dascyllus aruanus
Photo by Heather Shipp, 2017
The banded humbug or whitetail damselfish can be found in groups around coral bommies, often staghorn corals over shallow lagoons of the Indo-West or Central Pacific. Damselfish are egg layers and have a particularly interesting mating ritual. Once ready to mate, the fish will clear a site for the nest and then engage in a mating dance with rapid swimming and fin movements. During mating, males often turn a shade or two darker and may display white blotches. As with most fish, spawning usually occurs at dawn.
Tasselled Wobbegong
Eucrossorhinus dasypogon
Photo by Claire Guillaume, 2017
This beautifully ornate species of carpet shark often lies motionless on shallow, sandy reef bottoms and inside crevices. Reaching 1.8 m (5.9 ft) in length, the tasselled wobbegong is a very broad, moderately flattened shark with a complex colour pattern consisting of small blotches and reticulations. The species also has a very distinctive fringe of branching dermal flaps around its head that extends to its chin. This fringe, along with its complex colour pattern, enables the shark to effectively camouflage itself against the reef environment!
Have you seen animals that are not listed here?
Please submit your photos of what you saw at Gnaraloo – on land or in water – with a species identification.
Find more species identifications in the Gnaraloo Snorkel Guide by Denise Jenkins available at Gnaraloo Station.
