Mollusca

They are a common food for a variety of predators; however, the Tridacna gigasa themselves, get their food from a various sources such as microscopic marine plants and animals from the water by using its gills to filter it from the water.

They have no ability to move; in any direction however, if disturbed their mantle tissue retracts and the shell is closed. They reproduce by external fertilization with other clams nearby since they are immobile.

They can be found in bodies of water ranging from intertidal areas to the eastern Indian ocean and Pacific ocean. They have the uncommon ability, amongst the other species of Mollusca, to live out of water for a few hours; thus, they are able to adjust to low tides. They are commonly found attached to coral reefs, in shallow lagoons and reef flats embedded in substrates or coral rubble. in warm tropical waters. Many people in Asia and the Pacific Islanders eat Tridacna gigasa.

Loligo vulgaris is a species of squid, also known as the European Squid. It is known to migrate depending on its surrounding environmental conditions. They are able to adapt to their surroundings as their mantle, the soft-muscle that replaces the shell they lack, have chromatophores which help the squid to camouflage with its surroundings.

They are commonly found at least 200m deep in the water and it is possible for them to be deeper. They are distributed throughout the North Sea, present in the Mediterranean Sea, and on the southern and western British coasts.

They are different than most molluscs for their lack of hard exterior shell. They are a vulnerable species as they are a common prey amongst larger marine mammals and predators of the like. The Loligo vulgaris, themselves, feed on fishes and crustaceans.