The coast and its adjacent areas on and off shore are an important part of a local ecosystem: the mixture of fresh water and salt water in estuaries provides many nutrients for marine life.

Coral reef s are a highly Productivity ( ecology ) | productive marine ecosystem.

The ocean ecosystem has likely changed since the prewhaling era, making a return to prewhaling numbers infeasible ; many marine ecologists argue that existing gray whale numbers in the eastern Pacific Ocean are approximately at the population's carrying capacity.

The marine ecosystem is large, and thus there are many sub-fields of marine biology.

Some marine organisms, like corals, kelp and seagrasses, are ecosystem engineers which reshape the marine environment to the point where they create further habitat for other organisms.

* Large marine ecosystem

It covers a wide range of topics, including marine organisms and ecosystem dynamics ( biological oceanography ); ocean currents, waves, and geophysical fluid dynamics ( physical oceanography ); plate tectonics and the geology of the sea floor ( geological oceanography ); and fluxes of various chemical substances and physical properties within the ocean and across its boundaries ( chemical oceanography ).

inadequate facilities for disposal of solid waste ; threats to the marine ecosystem from sand and coral dredging, illegal fishing practices, and overfishing

* SeaDoc Society, University of California Davis scientific organization doing marine ecosystem research and education in the Salish Sea

It covers a wide range of topics, including marine organisms and ecosystem dynamics ; ocean currents, waves, and geophysical fluid dynamics ; plate tectonics and the geology of the sea floor ; and fluxes of various chemical substances and physical properties within the ocean and across its boundaries.

The unique ecosystem found in the intricate mesh of mangrove roots offers a quiet marine region for young organisms.

The strait is characterized by strong tidal currents, that established a unique marine ecosystem.

As a diverse ecosystem, seagrass beds provide shelter for fishes and other marine life forms.

Sea cucumbers serve a useful purpose in the marine ecosystem as they help recycle nutrients, breaking down detritus and other organic matter after which bacteria can continue the degradation process.

The Philippine Sea hosts an exotic marine ecosystem.

A marine park is a park consisting of an area of sea ( or lake ) sometimes protected for recreational use, but more often set aside to preserve a specific habitat and ensure the ecosystem is sustained for the organisms that exist there.

At present, there is an Advisory Committee ( ACOM ) that provides advice to clients on fisheries and marine ecosystem issues, a Science Committee ( SCICOM ; formally the Consultative Committee as established in the ICES Convention ) that oversees all aspects of the scientific work, and steering groups that coordinate the more than 100 expert groups covering most aspects of the marine ecosystem that work under them.

The Plan identifies a Mission which calls for 1 ) establishing effective arrangements to provide scientific advice ; 2 ) informing interested parties and the public objectively and effectively about marine ecosystem issues ; 3 ) coordinating and enhancing physical, chemical, biological, and interdisciplinary research ; 4 ) fostering partnerships with other organizations that share a common interest ; and 5 ) developing and maintaining accessible marine databases.

The day is now appropriately set aside to honor the American men and women who have contributed to the success of our merchant marine fleet in peace and war.

It is always wise to consult your marine dealer, local yacht or boat club secretary, or local law enforcement officers if you are not positive what the regulations are.

A new waterfront site for the bureau is now being built at Atlantic City, New Jersey, to provide the most modern marine testing facilities as a further tool to keep the sport safe.

The decking is quarter-inch mahogany marine plywood.

However, there are reports of particular amphibian populations invading marine waters where their species is normally unable to survive.

Accordingly the modern study of marine and freshwater algae is called either phycology or algology, depending on whether the Greek or Latin root is used.

Abalone ( or ; via Spanish, from the ), is a common name for any of a group of small to very large edible sea snails, marine gastropod molluscs in the family Haliotidae.

Immediately below this formation is the Bearpaw Shale, a marine formation representing a section of the Western Interior Seaway.

Baltic amber or succinite ( historically documented as Prussian amber ) is found as irregular nodules in marine glauconitic sand, known as blue earth, occurring in the Lower Oligocene strata of Sambia in Prussia ( in historical sources also referred to as Glaesaria ).

Following months to years of photo-degradation and oxidation in the ocean, this precursor gradually hardens, developing a dark gray or black color, a crusty and waxy texture, and a peculiar odor that is at once sweet, earthy, marine, and animalic.

Familiarity with the sea is proved by the free use of marine motifs in decoration.

A lance is formerly a weapon of war and it was also used to kill large marine animals after it has already been harpooned.

The island is primarily a nesting, roosting, and foraging habitat for seabirds, shorebirds, and marine wildlife.

The most abundant one is methyl bromide ( CH < sub > 3 </ sub > Br ) with an estimated 56, 000 tonnes produced by marine algae each year.

The brominated indole indigo dye is produced by a medium-sized predatory sea snail, the marine gastropod Murex brandaris.

Today, a marine is actually an infantry regiment that sometimes fights solely on land and is no longer tied to the navy.

One of the densest natural sources for phages and other viruses is sea water, where up to 9 × 10 < sup > 8 </ sup > virions per milliliter have been found in microbial mats at the surface, and up to 70 % of marine bacteria may be infected by phages.

The galjoen, black bream, or blackfish, Dichistius capensis, is a species of marine fish that is found only along the coast of South Africa.

* Blue biotechnology is a term that has been used to describe the marine and aquatic applications of biotechnology, but its use is relatively rare.

Despite its toxicity, a considerable fraction of petroleum oil entering marine systems is eliminated by the hydrocarbon-degrading activities of microbial communities, in particular by a remarkable recently discovered group of specialists, the so-called hydrocarbonoclastic bacteria ( HCCB ).

The Bailey system, based on climate, is divided into seven domains ( polar, humid temperate, dry, humid, and humid tropical ), with further divisions based on other climate characteristics ( subarctic, warm temperate, hot temperate, and subtropical ; marine and continental ; lowland and mountain ).

Mammals came to occupy almost every available niche ( both marine and terrestrial ), and some also grew very large, attaining sizes not seen in most of today's mammals.

The Diesel engine has the lowest specific fuel consumption of any large internal combustion engine employing a single cycle, 0. 26 lb / hp. h ( 0. 16 kg / kWh ) for very large marine engines ( combined cycle power plants are more efficient, but employ two engines rather than one ).

Though the British rewarded John Harrison for his marine chronometer in 1773, chronometers remained very expensive and the lunar distance method continued to be used for decades.

:* Platynereis dumerilii a marine polychaetous annelid, which evolved very slowly and therefore retained many ancestral features.

At a fundamental level, marine life helps determine the very nature of our planet.

It is also becoming understood that the well-being of marine organisms and other organisms are linked in very fundamental ways.

A very diverse range of unusual secondary metabolites is produced by marine fungi.

In some applications, for example a marine radar mounted on a recreational vessel, a radar with a magnetron output of 2 to 4 kilowatts is often found mounted very near an area occupied by crew or passengers.

Another example is the conch pearl ( sometimes referred to simply as the ' pink pearl '), which is found very rarely growing between the mantle and the shell of the queen conch or pink conch, Strombus gigas, a large sea snail or marine gastropod from the Caribbean Sea.

Recently, a very different pigment has been found in some marine γ-proteobacteria: proteorhodopsin.

In marine applications only about 50 turbo-electric units were ordered ( of which a considerable amount were finally sold to land plants ) during 1917-19, and during 1920-22 a few turbo-mechanic not very successful units were sold.

Clay deposits are typically associated with very low energy depositional environments such as large lakes and marine basins.

Loricifera ( from Latin, lorica, corselet + ferre, to bear ) is a phylum of very small to microscopic marine sediment-dwelling animals with twenty-two described species, in eight genera.

It shows how astronomical observations prove the inverse square law of gravitation ( to an accuracy that was high by the standards of Newton's time ); offers estimates of relative masses for the known giant planets and for the Earth and the Sun ; defines the very slow motion of the Sun relative to the solar-system barycenter ; shows how the theory of gravity can account for irregularities in the motion of the Moon ; identifies the oblateness of the figure of the Earth ; accounts approximately for marine tides including phenomena of spring and neap tides by the perturbing ( and varying ) gravitational attractions of the Sun and Moon on the Earth's waters ; explains the precession of the equinoxes as an effect of the gravitational attraction of the Moon on the Earth's equatorial bulge ; and gives theoretical basis for numerous phenomena about comets and their elongated, near-parabolic orbits.

Several studies have demonstrated how these sequences could be used very successfully to infer important ecological and physiological characteristics of marine cyanobacteria.

Though produced on a very small scale, Crimean War gunboat engines designed and assembled by John Penn of Greenwich are recorded as the first instance of the application of mass production techniques ( though not necessarily the assembly-line method ) to marine engineering.

The continental shelf is very narrow, and so steep it descends almost immediately to considerable marine depths along its 315-km coastline.

The construction of functional keys for the identification of the shells of marine mollusks to the species level can be very difficult, because of the great variability within many species and families.

The air in the marine layer becomes very moist and fog occurs.

Joseph Hewes, a resident of Edenton and a very successful owner of a merchant marine fleet, was appointed the first Secretary of the Navy in 1776.

Roseburg experiences a marine west coast climate like most of western Oregon, with cool, wet winters and very warm, dry summers.

Sea turtles and marine mammals ( West Indian Monk Seal and porpoise ) provided a very small portion of the meat in the Lucayan diet.