The red algae are nonmotile, which means they do not move on their own. Found all over the world in mostly marine but also freshwater habitats, red algae depend upon the movement of the water in which they dwell.Know More
Red algae, also known as rhodophyta, which means "red plant", have from 5,000 to 10,000 species, some of which are seaweeds. They derive their red color from a number of pigments, the most important of which is phycoerythrin. They obtain their energy through photosynthesis. Because the red pigmentation is able to absorb blue light waves, they can survive deeper in the ocean than other forms of algae. Some red algae, called coralline algae, contribute to the formation of coral reef structures by secreting calcium carbonate. Red algae reproduce sexually. Water currents carry male gametes to female sex organs, called carpogonium, where they become attached.
Red algae are consumed not only by fish, crustaceans and other marine animals, but also by humans. They are rich in vitamins and protein and easy to cultivate. The Japanese call them nori and use them to wrap sushi. In Britain they are known as laver and are eaten cold as a salad, baked into bread, fried or mixed with oatmeal. Red algae called Irish Moss are used in puddings, ice cream, preserves, and even beer and wine.Learn more in Marine Life
Corals move about as free-living creatures during their larval phase, only settling down into a semi-stationary lifestyle when they mature. Because the adults are largely immobile, corals have evolved with a number of adaptations to overcome this limitation. Coral moves when it eats, breaths and reproduces.Full Answer >
There are three different ways that shrimp move. While feeding on the ocean floor, shrimp use one set of legs known as periopods. However, these legs are fragile and are mostly used for perching. Shrimp also have five sets of another type of legs, which are called pleopods, and they are used for swimming. Finally, shrimp move backwards rapidly by using a movement called a tail snap.Full Answer >
Mollusks that live on land move quite slowly on a foot, while mollusks that live in the water send water out of their bodies to propel themselves. Most mollusks have a softer organ protected by a hard shell or are simply immobile.Full Answer >
Cephalopods move using jet propulsion. They control their direction of movement by adjusting the direction of the funnel of water they shoot out. Cephalopods also use their arms to walk across the ocean floor, while their fins enable them to swim through the water. A few species of cephalopods can also use their funnel to shoot water with enough pressure to blast themselves out of the water.Full Answer >