From the smallest pond (1m square) to the largest lake, this biome provides many opportunities for life to thrive. Because many of these bodies of water are closed environments, they often have self-contained ecologies, enabling some to become evolutionary microcosms. One such example is the African Great Lakes, where over a thousand new species of cichlid fish have evolved during the last 12,400 to 100,000 years.
In order to see this content you need to have an up-to-date version of Flash installed and Javascript turned on.
Siberian Galapagos
Isolated for millions of years, Lake Baikal is an evolutionary hotspot.
Isolated for millions of years, Lake Baikal is an evolutionary hotspot.
Ancient lake
Siberia's Lake Baikal is the world's deepest and oldest lake.
Siberia's Lake Baikal is the world's deepest and oldest lake.
Lake Rankul
Plants are adapted to the desert-like conditions of high altitude lakes.
Plants are adapted to the desert-like conditions of high altitude lakes.
Disappearing waters
The mystery of the vanishing lake is explained.
The mystery of the vanishing lake is explained.
Lively lakes
As life flourishes in fertile lakes Prespa and Ohrid, new species evolve.
As life flourishes in fertile lakes Prespa and Ohrid, new species evolve.
Platypus
American mink
Baikal seal
Common seal
Giant river otter
North American river otter
Otter
Polecat
Amazonian manatee
Hippopotamus
Water buffalo
Beavers
Capybara
European beaver
European water vole
North American beaver
Star-nosed mole
Amazon river dolphin
Black-throated diver
Great northern diver
Greater flamingo
Lesser flamingo
Barnacle goose
Bewick's swan
Goldeneye
Mallard
Mandarin duck
Mute swan
Swans
Whooper swan
Black-necked grebe
Clark's grebe
Great crested grebe
Grebes
Typical grebes
African fish eagle
Osprey
White-tailed sea eagle
Common crane
Common moorhen
Coot
Coots, cranes and rails
Kingfisher
Pied kingfisher
Dipper
Reed warbler
Sedge warbler
Avocet
Great black-backed gull
Oystercatcher
Plovers and lapwings
Ringed plovers
Bittern
Grey heron
Herons, egrets and bitterns
Little egret
American crocodile
Crocodiles
Nile crocodile
Spectacled caiman
Grass snake
Tibetan spring snake
Water monitor
Common toad
Ditch frogs
Marsh frog
Smoky jungle frog
Surinam toad
Chinese giant salamander
Great crested newt
Japanese giant salamander
Palmate newt
True salamanders and newts
Characids
Red-bellied piranha
Three-spined stickleback
Pirarucu
Atlantic salmon
Atlantic salmon and trout
Salmon family
Sockeye salmon
Ray-finned fishes
Catfish
Cichlid fish
Perch-like fishes
Great diving beetle
Banded demoiselle
Damselflies and dragonflies
Dragonflies
Norfolk hawker
Highland midge
A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land apart from a river, stream, or other form of moving water that serves to feed or drain the lake. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams, which are usually flowing. However most lakes are fed and drained by rivers and streams.
Natural lakes are generally found in mountainous areas, rift zones, and areas with ongoing glaciation. Other lakes are found in endorheic basins or along the courses of mature rivers. In some parts of the world there are many lakes because of chaotic drainage patterns left over from the last Ice Age. All lakes are temporary over geologic time scales, as they will slowly fill in with sediments or spill out of the basin containing them.
Many lakes are artificial and are constructed for industrial or agricultural use, for hydro-electric power generation or domestic water supply, or for aesthetic or recreational purposes.
This entry is from Wikipedia, the user-contributed encyclopedia. If you find the content in the 'About' section factually incorrect, defamatory or highly offensive you can edit this article at Wikipedia. For more information on our use of Wikipedia please read our FAQ.
Take a trip through the natural world with our themed collections of video clips from the natural history archive.
This is Planet Earth
With Planet Earth Live hitting our screens, what better way to marvel at the wonders of nature than watching a fantastic collection of video highlights from the original Planet Earth series.
Nature's record breakers
Animal kingdom record breakers - how fast can a cheetah run, how heavy is an elephant and what's bigger than a dinosaur? Watch amazing video clips from the BBC archive and uncover the fascinating facts about our smallest primate, the longest stick insect and the most venomous snake.
Garden wildlife
From badgers to butterflies and frogs to foxes, garden wildlife is both varied and surprising.
BBC © 2012 The BBC is not responsible for the content of external sites. Read more.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.