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Kelp forests


Kelp

Kelp

Kelp soaks up nutrients from the water around it, so it has no need of roots. Instead, it has a claw-shaped foot, called a holdfast, that anchors it firmly to the seabed. Occasionally ripped apart in storms, kelp can grow back as quickly at a rate of 50 centimetres (20 inches) a day, eventually reaching lengths of up to 80 metres (about 260 feet). It must reach the sunlight at the surface—essential for its survival.
Kelp has many sword-like leaves, called blades. At the base of these blades are ball-shaped pods of gas called "bladders". These help the kelp to stay upright in the water.
 
 

Animal life

Kelp can grow as quickly as 50 cm (20 inches) a day, eventually reaching lengths of up to 80 m (about 260 ft).

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