Although some species emerged from the sea millions of years ago to occupy all available niches on land, others remained in the sea and developed and adapted to life beneath the surface.

The ocean covers the bulk of the earth, yet scientists are constrained in their research of ecosystems that have no physical borders and can span thousands of kilometres.

Each type of marine life has evolved to fit into a specialised niche with very restricted variations in salinity, temperature, and light. The high salt content of the water may maintain enormous squids and whales' huge bodies, allowing them to evolve without the requirement of powerful limbs for support. Nonetheless, salt water puts huge pressure on the air spaces of deep-sea marine organisms (fluids like blood are practically incompressible). Pressure rises by 14.7 pounds per square inch for every 33 feet of water (equivalent to one atmosphere per 10 metres), limiting our depths greatly unless we employ diving vessels particularly constructed to sustain one atmosphere.

Despite this, a wide range of different creatures flourish in high-pressure environments. Some of them are even surface dwellers who breathe air like us. Weddell and elephant seals can dive for up to a mile (sperm whales go much deeper than that). All of these creatures appear to have the same secret: instead of battling the pressure, they allow it to totally collapse their lungs. Some oxygen stays in their lungs, but the majority of it is stored in their muscles, where it is required; their muscle tissue has considerably larger amounts of oxygen-binding myoglobin than ours.

Furthermore, as documented last year by a research led by Terrie Williams of the University of California, Santa Cruz, compressed lungs provide a significant advantage to deep-diving animals. When a seal's lungs fail, it becomes heavier than water and sinks. As a result, it doesn't have to flap its flukes or flippers all the way down; it reaches tremendous depths largely by gliding gently, reserving its oxygen reserves for the deep bottom itself, which is well beyond the range of diving mammals, is home to an astounding variety of species. Some of the fish even have lung-like swim bladders to control their buoyancy: they move up and down the water column by secreting gas into the bladder and inflating it, and they move down by reabsorbing gas into their blood. The researchers aboard the Knorr have witnessed such fish hanging stationary a few feet above the bottom with Jason. But they've made no attempt to get the fish up to the ship because they know the outcome would be disastrous and difficult trip back to the surface. A swim bladder does not collapse at deep because the gas within is at the same pressure as the water outside, which implies that if the external pressure drops suddenly, the bladder swells catastrophically. "When we bring a fish up from deep, its swim bladder is frequently protruding from its mouth," explains Shana Goffredi of the Monterey Bay Aquarium Research Institute. "Too those animals aren't doing so well."

Temperatures fluctuate drastically between the ocean's top and its depths. Many adaptations to temperature changes have evolved in marine life. Many marine mammals have blubber to keep them warm in the winter, and certain fish have an antifreeze-like chemical in their blood to keep it flowing. It's fascinating to observe the vastly varied adaptations of marine life on a vertical scale in the ocean. Surface-water animals and plants have access to higher nutrient levels, higher temperatures, lower pressure, and more light, and hence lack the adaptations of deep-sea species, which must survive in highly pressured, cold, dark waters with scant nutrients.

Marine life has evolved to a wide range of environmental conditions and habitats. Barnacles and mussels have evolved methods to cling to rocks in settings where they would otherwise be carried away by high waves. Clownfish with bright colours have developed symbiotic connections with anemones to protect both the clownfish and the anemone from predators. Sperm whales and herring gulls have evolved to long-distance migration and survival in a range of habitats.

Although this article focuses mostly on marine body structural adaptations, marine adaptations also include symbiosis, camouflage, defensive behaviour, reproductive tactics, contact and communication, and adaptations to environmental factors like as temperature, light, and salt.
-By Parnika Snehi (SMSMB)

Variation is a transformative interaction by which a living being turns out to be progressively appropriate to living in a specific living space. It's anything but a speedy interaction! Regular determination over numerous ages brings about supportive characteristics turning out to be more normal in a populace. This happens on the grounds that people with these characteristics are better adjusted to the climate and consequently bound to make due and breed.

Variation is likewise a typical term to depict these accommodating or versatile characteristics. All in all, a transformation is a component of a living being that empowers it to live in a specific living space. A transformation is a trademark that assists a creature with making due in its territory. All creatures should have the option to acquire food and water, safeguard themselves from hurt, endure the environment, and repeat youthful so the species doesn't become terminated.
-By Harsh (SMSMB)

The FLAMINGO TONGUE SEA SNAIL is a small but brightly coloured Marine specie that belongs to the Ovulidae family whose scientific name is Cyphoma Gibbosum. Even though they are small, but at the same time they are mighty too as they can feed on the Toxic sea fans without any issue. These fabulous and outstanding specie of marine snails are found in Tropical Waters. The FLAMINGO TONGUE snails are predators that eat Soft corals. Some of their prey species are typically sea fans, whip corals and other soft corals. Though these are small snails, but the way they feed on their prey is a bit goosebumps giving as when they catch their prey, they slowly crawl on the bodies of their prey and start eating the soft tissue on their prey's body which leaves nothing but the skeleton of the coral's body. Though these snails are good predators and am outstanding and gorgeous specie with bright colours, they can just live upto two years. Their symmetric pattern and bright colouring is due to when their Larval stage of life arrives. Male and female both FLAMINGO TONGUE SEA SNAILS leave mucus trails that release pheromones when it's time to breed. The FLAMINGO TONGUE snails aren't opisthobranch that has large flaps on it's body which covers most of their shell. FLAMINGO TONGUE snails are mostly found in the Western Atlantic ocean's Tropical and Subtropical waters. These species are also spread in The Coast of North Carolina spreading more and coming down to Brazil and throughout The Caribbean and The Gulf of Mexico. Though these corals have High toxic flesh in comparison to other Marine animals, these toxins are a protection for themselves as these toxins protect them from their predators. Like a FLAMINGO TONGUE snail is a predator for many animals, these too have some predators around them. Some of their predators are Hogfish, Pufferfish and The Caribbean Spiny Lobster. The FLAMINGO TONGUE SEA SNAIL isn't a rare specie and is commonly found in the Western Atlantic Ocean but still scuba divers and snokelers over collection of this specie is a major threat to them as scuba divers and explorers consider this specie as a prize catch as it has a beautiful pattern and colour on the shell. So, FLAMINGO TONGUE snails aren't rare or endangered but the over collection by snokelers and divers is a threat to them as it truly affects their population.
-By Kritika (SMSMB)