The giant clams are the members of the clam genus Tridacna that are the largest living bivalve mollusks. There are actually several species of “giant clams” in the genus Tridacna, which are often misidentified for Tridacna gigas, the most commonly intended species referred to as “the giant clam”.
Oxynoe viridis can be variable in body colour,from greenish,green or dark green to greenish-yellow with large and small blue spots.This nudibranch is feeding on a variety of species of Caulerpa algae. Oxynoe viridis can produce a sticky white secretion when attacked and/or can break off a part of their foot to distract the attacker. A new tail grows back.
Notobryon wardi feeds on hydroids.
This nudibranch feeds on sponges.
Goniobranchus kuniei has a pattern of blue spots with pale blue haloes on a creamy mantle. There is a double border to the mantle of purple and blue. The length of the body reaches 40 mm.The species Goniobranchus tritos and Goniobranchus geminus have similar colour patterns.
The bluespotted stingray has a flat disc-like rhomboid body up to 47 centimeters (19 in) in diameter and 70 centimeters (28 in) in total length.Their coloring is a dark green with blue spots with a light white underbelly also known as countershading. Its snout is very short and broadly angular along with its angular disc. The rays’ bright coloration serves as a warning for its venomous spines. The ray has a very long tail accommodating two venomous spines on the base of the tail. The tail is about twice as long as the body of the ray, and the barbs or spines are two different sizes, one being very large and the other a medium-sized barb. The bluespotted stingray has bright yellow eyes that are positioned to allow them a wide angle of view. Since the gills are located ventrally, the spiracles allow water to reach the gills while resting or feeding on the benthos. The spiracles are located directly behind the eyes. The mouth is located on the ventral side of the body, which promotes the unique foraging technique of stingrays. Rays are normally solitary individuals but can occur in groups. One unique characteristic of the bluespotted stingray is that they rarely bury themselves in the sand, only to hide from predators, unlike the majority of stingrays who bury themselves regularly to hunt.
Like other members of the family Ostraciidae, the thornback cowfish has hexagonal, plate-like scales which are fused together to form a solid, box-like carapace, from which the eyes, mouth, fins and tail protrude. The mouth is small and has protruding lips, the upper profile of the snout is straight, the back is somewhat convex, the flanks are concave and the belly rounded. There are small pre-ocular spines on either side of the head, a large spine projects from the dorsal ridge and a further moderate-sized spine projects from each of the pelvic ridges near the anal fin. Neither the dorsal fin nor the anal fin has any spines but both have nine soft rays, while the caudal fin is fan-shaped and has ten rays. A typical length for this fish is 15 cm (6 in); the colour is variable, and changes to match the fish’s surroundings; generally pale tan with spots or wiggly markings in yellow, mauve or blue. In some regions, this fish is toxic.
The longhorn cowfish (Lactoria cornuta), also called the horned boxfish, is a species of boxfish from the family Ostraciidae, recognizable by its long horns that protrude from the front of its head, rather like those of a cow or bull.They are a resident of the Indo-Pacific region and can grow up to 50 cm (20 in) long.
Dactylopus kuiteri, known commonly as the Kuiter’s dragonet, is a species of marine fish in the family Callionymidae.
The Kuiter’s dragonet is widespread throughout the tropical waters of the central Indo-Pacific region and particularly around Indonesia.
This is a medium-sized fish that can reach a length of 60 centimeters (24 in). Small individuals are dark brown with hundreds of small, dark-edged iridescent blue spots. Larger specimens sometimes develop four to six lighter vertical bars on the back half of its body.
Arothron caeruleopunctatus is a medium-sized fish which grows up to 80 cm length. Its body is oval shape, spherical et relatively elongated. The skin is not covered with scales. The fish has no pelvic fin and no lateral line. The dorsal fin and the anal fin are small, symmetric and located at the end of the body. Its snout is short with two pairs of nostrils and its mouth is terminal with four strong teeth.
Aluterus scriptus is a medium size fish which can grow up to 110 cm (3.6 ft) in length. The body shape looks like an elongated oval, strongly compressed. Its background body coloration is olive-brown or grey depending on its surrounding environment, irregular blue lines and spots are distributed on the body mixed with some black spots mainly on the head. The colors may quickly vary depending on background similar to an octopus’s. Fish observed in the Virgin Islands might lie flat on the sand and become pure white or change to any of the other representative colors. The mouth is small and at the end of its pointed snout. Like all the Tetraodontiformes, it has no pelvic fin but has two particular dorsal spines; the first anterior one is long, slender and erectile, located just over the eyes, the second is small and not easy to see but it locks the first one when it is erected.[3] The rounded caudal fin is quite long and can be displayed as a fan.