lets us know about the Aqua Life
Aqua life included all plants and animals living in the ocean and the other water bodies such as estuaries, wetlands, lakes, rivers, ponds, etc.
Life on Earth originated Aquarium in the ocean, which covers about 70% of our planet.
From tiny phytoplankton to massive blue whales and the largest colonial organism, the coral reef, the ocean water is home to a huge variety of Marine Life.
1.some types of spices about Marine life
Marine vertebrate- mammals, amphibians, and reptiles- are among the most structurally complex organisms. Over 98% of Marine species are invertebrates, animals that lack backbones. Spongs, worms, mollusks, arthropods, echinoderms, and hemichordates are some examples of Marine invertebrates. , Marine birds include penguins, puffins, pelicans, flamingos, etc. Common Marine fish are shark, cod, ray, sailfish, tuna, parrotfish, angelfish, sea horse, eels, etc.
2.Breathingprocess of fish
Fish breathe through their gills. Their nostrils are used only for a sense of smell and play no part in the respiratory. (A flexible bony flap, called the operculum), protects the sensitive gills. When a fish opens and closes its mouth, it is actually breathing. In an open mouth, the operculum closes, drawing water inside. In a close mouth, the operculum opens, allowing new water to cross the gills. ( The water travels through the gill arches and reaches the fragile membrane called filaments ). (These filaments consist of sequence rows of a thin, disc-like membrane having a capillary network called lamellae ). As the water flow, the oxygen it contains passes into the blood circulating through the lamellae. Simultaneously, the carbon dioxide in the fish's bloodstream passes into the water. This deoxygenated water is then carried away and out of the body through the operculum.
3. About the swimming process of fish:
Fish use their fins to steer through the water and maintain their position and stop. The skeleton, the muscles, and the swim bladder work together with the fins to allow a fish to swim. The caudal fin provides thrust and controls the fish's direction. The paired pectoral fins act mostly as rudders and also act as brakes by causing drag. The paired pelvic or ventral fins control pitch, and the dorsal and anal fins control roll. Muscles on the side of the body help the fish to push against the water. The swim bladder helps it adjust while it sinks, floats to the top, or keeps going straight.
4.The reproduces and growth of fish:
Unlike most other vertebrates, fish grow bigger as long as they live and eat. Reproduction is mostly by laying eggs. Each female produces thousands of eggs at spawning. The nests are depressions in the beds of streams and lakes, and sometimes even inside floating bubbles. The egg and young are usually guarded by the male. Male seahorses carry the egg in abdominal pouches similar to those of Kangaroos. Salmons migrate from the sea into the freshwater river, while freshwater eels migrate from a freshwater environment to the sea to spawn. Like guppies and sharks, some species give birth to living young ( called ' fry') from the eggs that are fertilized and hatched within their bodies.
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