Portal:Marine life

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The Marine Life Portal

Marine life is concerned with the plants, animals and other organisms that live in the ocean. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology classifies species based on the environment rather than on taxonomy. For this reason marine life encompasses not only organisms that can only live in a marine environment, but also those whose lives revolve around the sea.
At a fundamental level, marine life helps determine the very nature of our planet. Marine organisms produce much of the oxygen we breathe and probably help regulate the earth's climate. Shorelines are in part shaped and protected by marine life, and some marine organisms even help create new land.
Marine biology covers a great deal, from the microscopic, including plankton and phytoplankton, which can be as small as 0.02 micrometres and are both hugely important as the primary producers of the sea, to the huge cetaceans (whales, dolphins and porpoises) which reach up to a reported 33 metres (109 feet) in length in the case of the blue whale.



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The Alecton attempts to capture a giant squid in 1861

Giant squid, once believed to be mythical creatures, are squid of the Architeuthidae family, represented by as many as eight species of the genus Architeuthis. They are deep-ocean dwelling animals that can grow to a tremendous size: recent estimates put the maximum size at 10 meters (34 ft) for males and 13 meters (44 ft) for females from caudal fin to the tip of the two long tentacles (second only to the Colossal Squid at an estimated 14 meters (46 ft), one of the largest living organisms).

The mantle length, though, is only about 2 meters (7 ft) in length (more for females, less for males), and the length of the squid excluding its tentacles is about 5 meters (16 ft). There were reported claims of specimens of up to 20 meters (66 ft), but none had been scientifically documented.

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Jacques-Yves Cousteau in 1976.

Jacques-Yves Cousteau (11 June 1910 – 25 June 1997) was a French naval officer, explorer, ecologist, filmmaker, photographer and researcher who studied the sea and all forms of life in water. He co-developed the aqua-lung, pioneered marine conservation and was a member of the Académie française.

Cousteau was born in Saint André de Cubzac, France to Daniel and Elizabeth Cousteau on June 11, 1910 and died in Paris, France. He is generally known in France as le commandant Cousteau ("Commander Cousteau"). Worldwide, he was commonly known as Jacques Cousteau or Captain Cousteau.

Cousteau liked to call himself an "oceanographic technician". He was in reality a sophisticated lover of nature. His work permitted many people to explore the resources of the "blue continent".

His work also created a new kind of scientific communication, criticised at the time by some academics. The so-called divulgationisme, a simple way of sharing scientific concepts, was soon employed in other disciplines and became one of the most important characteristics of modern TV broadcasting.

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Did you know...

Light microscopy image of the undescribed species of Spinoloricus that is living in anoxic environment (Stained with Rose Bengal). Scale bar is 50 μm.
Titan triggerfish.jpg
  • Triggerfishes are the brightly coloured fishes of the family Balistidae. (pictured)
  • The sea otter often keeps a stone tool in its armpit pouch.

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Two cuttlefish interacting at the Georgia Aquarium.
Photo credit: Diliff

Cuttlefish are marine animals of the order Sepiida belonging to the Cephalopoda class (which also include squids, octopuses and nautilus). Although the name suggests it, cuttlefish are not fish, but molluscs. Cuttlefish have an internal shell, large eyes, and eight arms and two tentacles furnished with denticulated suckers, by means of which they secure their prey.

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Marine Life Categories

Major Fields of Marine Biology: Marine Biology - Ecology - Zoology - Animal Taxonomy

Specific Fields of Marine Biology: Herpetology - Ichthyology - Planktology - Ornithology

Biologists: Zoologists - Algologists - Malacologists - Conchologists - Biologists - Marine Biologists - Anatomists - Botanists - Ecologists - Ichthyologists

Organisms:

Plants: Algae - Brown Algae - Green Algae - Red Algae - Sea Vegetables -

Invertebrates: Cnidarians - Echinoderms - Molluscs - Bivalves - Cephalopods - Gastropods

Fish: Fish - Bony Fish - Lobe-finned Fish - Ray-finned Fish - Cartilaginous Fish - Electric Fish - Fish Diseases - Rays - Sharks - Extinct Fish - Fictional Fish - Fisheries Science - Fishing - Fishkeeping - Live-bearing Fish

Reptiles and Amphibians: Marine Reptiles - Sea Turtles - Mosasaurs - Sauropterygia

Mammals: Marine Mammals - Cetaceans - Pinnipeds - Sirenians

Miscellaneous: Aquaria - Oceanaria - Vertebrates Without Jaws - Endangered Species - Aquatic Biomes - Terrestrial ecozones - Aquatic Organisms - Cyanobacteria - Dinoflaggellates

Marine Life Topics

Ocean zones: Photic zoneAphotic zonePelagic zoneNeritic zoneLittoral zoneSublittoral zoneBenthic zone
Plants and Algae: AlgaeBrown algaeRed algaeGreen algaeSeagrassPhytoplankton
Invertebrates: SquidCuttlefishCrabsLobstersStarfish Cscr-featured.svgSea UrchinJellyfishPortuguese man o' warCorals Symbol support vote.svgTunicates Symbol support vote.svg
Fish: LampreysJawless fishCartilagenous fishBony fishSharksRaysSkatesCoelacanthsLungfishPlacodermiLobe-finned fishRay-finned fishSturgeonsGarsEelsHerringsSalmonTroutLancetfishAnglerfishToadfishCodsFlyingfishSeahorsesFlatfishScorpionfishCichlids
Reptiles: CrocodilesAlligatorsCaimanGharialTurtlesSea turtlesLeatherback turtleMarine iguanaSea snakes Symbol support vote.svg
Birds: PenguinsSea gullsKittiwakesAlbatrosses Cscr-featured.svgSea ducksCormorantsSea eagleGuillemotsPuffinsAuksTernsGannetsOsprey Symbol support vote.svgRazorbillOystercatchers
Mammals: MonotremesMarsupialsCetaceansWhalesDolphinsPorpoisesPinnipedsWalruses Symbol support vote.svgTrue sealsFur sealsSea LionsSireniansManateesDugongs Symbol support vote.svgPolar bear Symbol support vote.svgSea otter Cscr-featured.svgMarine otterBlubber
Cscr-featured.svg Represents a Featured article, Symbol support vote.svg Represents a Good article


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