Oysters eat plankton, algae and small food particles that wash over their gills. Both oysters and clams use the same type of siphoning and straining system to remove food from the water around them.
When water washes over an oyster, it pushes the water through its body and extracts any plankton or small particles of water vegetation. Oysters are called filter feeders because they essentially filter their food out of the water.
The food that an oyster eats can affect what a person finds when opening the oyster. Depending on the color of the algae eaten, an oyster may have green or red coloring inside.Learn More
According to the St. Lawrence Global Observatory, lobsters prefer rocky ocean bottoms covered with algae. They can hide in the rocks, and the algae makes it easier for them to blend in. The algae also attracts food for the lobsters. When lobsters cannot find rocks, they will burrow into pebbles, sand, or clay. Lobsters stay at the entrance of their shelters, claws out so they can defend themselves.Full Answer >
Krill live in all the oceans of the world, the most abundant of which is Antarctic krill. This species, found in the Southern Ocean, has an accumulated weight of between 125 million to 6 billion tons.Full Answer >
The ambulacral groove is a deep linear depression located in the ambulacrum in some echinoderms such as starfish. The ambulacrum is an area in echinoderms that is marked by calcitic plates and located over the radial canals of the internal water-vascular system.Full Answer >
Sharks and whales are enormous ocean creatures that have large, torpedo-shaped bodies and dorsal fins. Both species swim well in the water, use their senses to catch prey and, as meat eaters, rely on carnivorous food to survive. Both the shark and whale have large teeth and huge jaws, and neither seem to show mercy when they kill.Full Answer >