What are the similarities and differences between the Giant Clam and the Maxima Clam?

What are the similarities and differences between the Giant Clam (Tridacna squamosa) and the Maxima Clam (Tridacna maxima)?

The Giant Clam and the Maxima Clam are both marine (saltwater), bivalve molluscs in the Cardiidae family. Bivalve means two valves (or two shells). They both prefer to live on the bottom of the ocean in shallow coral reefs.

The Giant Clam and the Maxima Clam both have a thick, ridged calcium carbonate shell, called a mantle. Their shells, which can open and close, have two equal-sized calcareous valves connected with a flexible adductor muscle. 

Continue reading “What are the similarities and differences between the Giant Clam and the Maxima Clam?”

Maxima Clam

The Maxima Clam (Tridacna maxima) is a marine (saltwater) bivalve mollusc in the Cardiidae family. It is also called the Small Giant Clam. It is related to the Cockle. 

The Maxima Clam has a thick shell called a mantle. Its shell is actually two equal-sized calcareous valves connected with a flexible adductor muscle. The shell can open and close. Bi-valve means two valves (or two shells). The mantle is bright-blue, green, or brown with distinctive furrows. It has a mouth, a heart, kidneys, a stomach, and a nervous system. 

Continue reading “Maxima Clam”

Bluegreen Giant Clam

The Bluegreen Giant Clam (Tridacna derasa) is a marine (saltwater) reef bi-valve mollusc in the Cardiidae family. It is also called the Southern Giant Clam. It is related to the Cockle.

The Bluegreen Giant Clam is smoother than most clams, because it lacks ridging. It has a thick shell, called a mantle. Its shell is actually two equal-sized calcareous valves connected with a flexible adductor muscle. The shell can open and close. Bi-valve means two valves (or two shells). It has 6-7 rippled edges, called folds or flute. It does not have scutes (scales). The mantle has stripes or spots and is blue and green, with some white patches. It has a mouth, a heart, kidneys, a stomach, and a nervous system.

Continue reading “Bluegreen Giant Clam”

Giant Clam

The Giant Clam (Tridacna squamosa) is a marine (saltwater) reef bi-valve mollusc (mollusk).  It is also called the Fluted Giant Clam or the Scaly Clam. It is related to the Cockle.

The Giant Clam has a thick brown, green, or purple-coloured ridged shell, called a mantle. Its shell is actually two equal-sized calcareous valves connected with a flexible adductor muscle. The shell can open and close. Bi-valve means two valves (or two shells). The mantle has 6-7 rippled edges, called folds or flutes. It has scales, called scutes. It has spotted patterns on the mantle. It has a mouth, a heart, kidneys, a stomach, and a nervous system.

Continue reading “Giant Clam”