A group of vertebrates including frogs, salamanders and caecilians. Amphibians usually have aquatic larvae and terrestrial adults.
are animals which live on land and in water, but need to return to water to reproduce. For example frogs, toads and newts all spend the first part of their lives as tadpoles in water, but when they grow into adults, they develop legs and lungs which enable them to live on land. The Arctic Circle is a very cold area of land around the North Pole and includes Alaska, Greenland, parts of Canada and Russia. The Arctic Circle has very short summers where the sun shines day and night, and very long, dark winters when it is dark for many months. For more information about land in the Arctic Circle, find Habitat Fact Sheet Number 1. Blowhole is the hole on top of a whale’s head. Their nostrils are positioned beneath a valve which stops water coming in when the whale dives under water.
A class of animals with backbones (vertebrates) that includes frogs, salamanders and caecilians. Amphibians have moist skin and do not have scales, feathers, or hair. Amphibians can live in water or on land. Most lay eggs in water and their larvae go through a complex metamorphosis process as they grow to adulthood and move to land. It is thought that amphibians were the first animals to venture out from the water and adapt to life on land.
Animals that live on land or near water, but must return to water to lay eggs. Most have moist, smooth skin and begin life as tadpoles before changing to become adults. Examples: frogs, toads, salamanders.
An animal that may begin its life in water, but as an adult is at home in both water and land; frog, salamanders ( newt) and caecilians (found in the tropics only).
A transitional group of vertebrates between fish and reptiles, capable of living on land, but returning to the water to reproduce Geologic Range: Devonian to Recent
the group of vertebrate animals that includes frogs, toads and salamanders, which must lay their gelatinous eggs in water.
cold-blooded, smooth-skinned vertebrates such as frogs that charactertistically hatch as an aquatic larvae and metamorphose into an adult form with air-breathing lungs
Class of terrestrial vertebrates which lay their eggs (and also mate) in water but live on land as adults following a juvenile stage where they live in water and breathe through gills. Amphibians were the first group of land vertebrates; today they are mostly restricted to moist habitats.
a group of vertebrate animals that spend part of their time on land and part in the water; so they are considered an intermediate form between fishes and reptiles. Amphibians must return to the water to breed and they have distinct larval and adult forms. Members of this group include frogs, toads, and salamanders.The name is derived from the Greek word amphibios which means "living a double life".
The class of vertebrates that contains the frogs, toads, newts, and salamanders. The amphibians evolved in the Devonian period (about 370 million years ago) as the first vertebrates to occupy the land. They have moist scaleless skin which is used to supplement the lungs in gas exchange. The eggs are soft and vulnerable to drying, therefore reproduction commonly occurs in water. Amphibian larvae are aquatic, and have gills for respiration; they undergo metamorphosis to the adult form. Most amphibians are found in damp environments and they occur on all continents except Antarctica.
smooth-skinned, cold-blooded vertebrate animals that spend some time on land, but must breed and develop into an adult in water. Examples are toads, frogs, and salamanders.