amphibian
Frog or salamander
An amphibian is a cold-blooded vertebrate that typically begins life in water with gills, then develops lungs for life on land—frogs, toads, salamanders, and newts.
The term extends to vehicles or aircraft that operate on both water and land: an amphibian plane, amphibious assault.
As an adjective, amphibian describes anything adapted for both environments.
Tailless leaping amphibian
- toadWarty terrestrial amphibian
- salamanderTailed, moist-skinned amphibian
- newtSmall aquatic salamander
- axolotlPermanently larval salamander
tadpole · eft · spawn · larva · gills · metamorphosis · cold-blooded · ectotherm
Small still body
- marshGrassy waterlogged lowland
- swampWaterlogged land with vegetation
- bogAcidic peat wetland
- wetlandWaterlogged land ecosystem
freshwater · stream · vernal pool · reedbed · lily pad · aquatic · terrestrial · semi-aquatic
Harsh guttural sound
burrow · hibernate · estivate · breed · vocalization · mating call · territorial · nocturnal
Remains documenting prehistoric life
- tetrapodFour-limbed vertebrate animal
- DevonianGeologic period, 419-359 million years ago
- PaleozoicEarly complex-life epoch
- adaptationFitting to new conditions
phylogeny · ancestry · divergence · speciation · cladistics · homology · prehistoric · missing link
Interconnected organisms and surroundings
- biodiversityRange of life forms
- conservationPreventing waste or loss
- endangeredAt risk of extinction
- extinctionComplete vanishing of a species
chytrid · habitat loss · food web · insectivore · carnivorous · predator · prey · breeding
- hovercraftFan-supported amphibious vehicle
- landing craftShip-to-shore military vessel
- marinesNaval infantry soldiers
- all-terrainCapable on any ground
sealegs · military · reconnaissance · rescue · expedition
frog
Tailless leaping amphibian
- toadWarty terrestrial amphibian
- salamanderTailed, moist-skinned amphibian
- newtSmall aquatic salamander
axolotl · tadpole · eft · spawn · larva · gills · metamorphosis · cold-blooded · ectotherm · vertebrate
pond
Small still body
wetland · freshwater · stream · vernal pool · reedbed · lily pad · aquatic · terrestrial · semi-aquatic · riparian
croak
Harsh guttural sound
leap · burrow · hibernate · estivate · breed · vocalization · mating call · territorial · nocturnal · foraging
fossil record
Remains documenting prehistoric life
- tetrapodFour-limbed vertebrate animal
- DevonianGeologic period, 419-359 million years ago
- PaleozoicEarly complex-life epoch
adaptation · phylogeny · ancestry · divergence · speciation · cladistics · homology · prehistoric · missing link · ancestral
ecosystem
Interconnected organisms and surroundings
- biodiversityRange of life forms
- conservationPreventing waste or loss
- endangeredAt risk of extinction
extinction · chytrid · habitat loss · food web · insectivore · carnivorous · predator · prey · breeding · migration
duck boat
- hovercraftFan-supported amphibious vehicle
- landing craftShip-to-shore military vessel
- marinesNaval infantry soldiers
all-terrain · sealegs · military · reconnaissance · rescue · expedition
- life formsorganisms, organism, lifeforms, animal, creatures
- ecologyhabitat, ecosystem, balance, niche, food webs
- zoologymammals, reptiles, birds, insects, fish
- seaplanesseaplanes, floatplane, floatplanes, flying boat, flying boats
- biologycells, DNA, cell, biology, gene
- creaturesanimals, animal, mammals, mammal, birds
amphibianaquatic animal
Water-dwelling organism
endotherm · fish · mammal · invertebrate · insect
- amphibious landingAttack launched from sea
- amphibious assaultAttack launched from water
- amphibious vehicleTravels land and water
- amphibious warfareCombat from sea to land
- amphibious carsVehicles for land and water
- amphibious forceTroops for water-land operations