Aquatic Habitat

Some aquatic habitats are:

• Seas and Oceans
• Ponds, lakes and rivers.

Seas and Oceans:

• Sea contains saline(salty) water.
• Plants and Animals in the sea are surrounded by salty water.
• And most of them use the air dissolved in the water for their survival.

Animals in Seas and Oceans:

• Animals which are found in oceans have a streamlined body (pointed at the ends and broad in the middle) which help them to move easily in water

• There are some animals who do not have a streamlined shape, these animals are found deeper in the ocean. These animals make their body streamlined when they move in water
• They also have gills which help them to breathe in water.

• They have slippery scales on their body, these scales protect the fish and help in easy movement in water.

• Fishes have fins and tail which helps them to change direction and keep their body balanced

Example - Squid and octopus

Note:

Animals such as dolphins and whales do not have gills , they breathe through nostrils or blow holes which are in the upper part of the head. These animals can stay a long time without breathing inside water and come out at the surface to breathe.

Ponds, Lakes and Rivers:

Plants in Ponds

• Plants which are found in ponds have short roots .
• Main function of these roots is to hold the plant firmly to the soil.
• Stems of aquatic plants are long, hollow and light, they grow up to the surface of water while leaves and flowers float on water.
• Some plants are found totally submerged in water, leaves of these plants are narrow and ribbon-like which can easily bend in the flowing water

Animals in Ponds

• Frog is one such animal which can be found in ponds
• They can stay both in water as well as move on the land
• They have webbed feet which help them to swim in water and strong back legs which helps them in jumping and catching prey