Adaptations are any behavioral or physical characteristics of an animal that help it to survive in its environment. These characteristics fall into three main categories: body parts, body coverings, and behaviors.

Additional adaptations, like special gills, reduced activity levels, breathable skin, and modified kidneys (which filter their blood and make urine) help wetland animals deal with low oxygen levels and saltwater.

Aquatic plants require special adaptations for living submerged in water, or at the water’s surface. The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floating leaves and finely dissected leaves are also common.

Adaptations for Water

• Fish have gills that allow them to “breathe” oxygen in water.
• Fish have a stream-lined body.
• Most fish have several fins for swimming.
• Fish have a system of muscles for movement.
• Most fish have a swim bladder.

Body shape is also an important adaptation in fish. Fast moving fish have long torpedo shaped bodies to help them move though the water. In general fish have a dorsal fin on their back and pelvic and anal fins on their undersides. They also have pectoral fins near the gills and a caudal fin as the tail.

Fish behavioral adaptations are the way different fish act to survive. Some fish hide in rocks and sand to catch prey, some paralyze other marine life for safety and food.

The five categories of the adaptations are migration, hibernation, dormancy, camouflage, and estivation. The migration can be defined as the phenomenon of the movement of the animals from one region to another in order for their survival.

Adaptation is an evolutionary process where a plant or an animal becomes suited to living in a particular habitat. These are changes that take place over many generations through natural selection. Changes may be physical or behavioural.

The changes in the organism by which it suits best in the environment and leave behind offspring’s are known as adaptation. The capability of an organism to change itself with the changing world determines its survival.

Humans have biological plasticity, or an ability to adapt biologically to our environment. An adaptation is any variation that can increase one’s biological fitness in a specific environment; more simply it is the successful interaction of a population with its environment.