Floating Leaf Shrub

The floating leaf shrub split from its ancestor. The floating leaf shrub has developed leaves that can float on water. This comes in handy when the height of the water changes because the leaves won't drop underwater when it's too high. This way the leaves are always able to capture sunlight, even when the water is unclear (because of clouds of microorganisms, for example). The leaves can absorb air through small pores which close when they come in contact with water; because of this, the pores on the underside of the leaves are never open. The leaves are thicker (not heavier) then those of their ancestors but they are able to float because of the air inside them.