Plakobranchus is a genus of sea slugs, sacoglossans, marine opisthobranch gastropod mollusks in the family Plakobranchidae.
Plakobranchus papua is a common inhabitant of shallow coral reef pools and lagoons. It is seldom seen as it is well-camouflaged, half buried in the coral sand. Although to my knowledge it has never been studied by algal physiologists, it deserves their attention.
The mantle is margined in yellow, dark blue and light blue, somtimes the dark and light blue are reversed. The foot is bright yellow or yellow-orange.The egg mass is peach-colored ribbon.
The turkey moray is a medium size moray which can reach a maximum length of 120 cm, but specimens usually encountered are much smaller.Its serpentine in shape body has a dark brown to black background color dotted with numerous small white spots uniformly distributed. The inside of its mouth is completely white.
The whitespotted garden eel (Gorgasia maculata), also known as the Indian spaghetti eel, is an eel in the family Congridae (conger/garden eels). It was described by Wolfgang Klausewitz and Irenäus Eibl-Eibesfeldt in 1959. It is a marine, tropical eel which is known from the Indo-Western Pacific, including Maldives, the Solomon Islands, the Philippines, the Cocos Islands, Comoros, India, Indonesia, and Papua New Guinea. It dwells at a depth range of 25 to 48 metres (82 to 157 ft), and lives in non-migratory colonies that form burrows on sandy slopes, usually near coral reefs. Males can reach a maximum total length of 70 centimetres (28 in).
Whale sharks have a mouth that can be 1.5 m (4.9 ft) wide, containing over 300 rows of tiny teeth and 20 filter pads which it uses to filter feed. Unlike many other sharks, whale sharks’ mouths are located at the front of the head rather than on the underside of the head. Whale sharks have five large pairs of gills. The head is wide and flat with two small eyes at the front corners. Whale sharks are dark grey with a white belly. Their skin is marked with pale grey or white spots and stripes which are unique to each individual. The whale shark has three prominent ridges along its sides, which start above and behind the head and end at the caudal peduncle. Its skin can be up to 15 cm thick and is very hard and rough to the touch. The shark has two dorsal fins set relatively far back on the body, a pair of pectoral fins, a pair of pelvic fins and a single medial anal fin. The tail has a larger upper lobe than the lower lobe (heterocercal). The whale shark’s spiracles are just behind its eyes.
The white-spotted puffer (Arothron hispidus) is a medium to large-sized puffer fish, it can reach 50 cm length. It is light grey in color, or greyish or yellowish, and clearly covered with more or less regular white points, that become concentric contrasting white and dark grey lines that radiate around the eyes and pectoral fins. The ventral part is white. The “shoulder” (around the pectoral fins) is dark. It also has concentric contrasting white and dark grey lines that radiate around the eyes and pectoral fins.
Pseudoceros scintillatus is a small species which measures around 9 mm.
The dorsal pattern, without a longitudinal center line, is velvety black with a bold pattern of large green-yellow spots of irregular size and a wide orange border. Each spot, surrounded by a white ring, extends into the marginal band.
Dardanus megistos can reach a body length of about 25 cm (9.8 in).These large crabs have a bright red body with small white eyespots surrounded by black. Their bodies are covered with long erect coarse hairs of a dark red color. They have a pair of long white primary antennae or antennules, a pair of secondary antennae, stalked green brown eyes and three pairs of mouth appendages. The stalks of the eyes are reddish with a basal white spot. The soft, asymmetrical abdomen is spiral-shaped, useful in keeping in the shell, with a five-piece tail (telson and uropods). Like all decapod crustaceans, they have ten legs. The first pair of legs carries the pincers ( chelipeds). The left plier is bigger than the right one.