In most kelp, the thallus (or body) consists of flat or leaf-like structures known as the ‘Blades’.

Blades originate from elongated stem-like structures, called the ‘Stipes’. 

The holdfast, a root-like structure, anchors the kelp to the substrate of the ocean. 

Gas-filled bladders (pneumatocysts) form at the base of blades to hold the kelp blades close to the surface.

A very clever act of nature on many levels.

If you dive in the waters of the Chatham islands for abalone, cod or crayfish, the thallus is a great hiding place from great white sharks.

This family decided to build their home on the Chatham Islands far from the thallus, but close to the stipes.