:O Oh yes they do!
Lotus have waxy coating on the leaves to protect them from water.
They live in very hot climates, and so there is a lack of water around.Therefore, they need to retain as much water as possible to help them stay alive.The waxy layer helps reduce water loss from the cacti.
Most xerophytic plants have waxy coating on epidermal cells of leaves to minimize water loss by transpiration. For this reason these plants also have sunken stomato gaurded by trichomes etc.
Yes, Penguins do have a layer of coated wax, to prevent evaporation on its body. This is to keep the Penguin warm and dry.
waxy coating
A waxy coating
Keep water out.
a waxy coating on a plant (apex)
The waxy transparent layer of leaves prevents water evaporation.
A few desert plants have a waxy coating that helps protect them from the heat and dry air of the dessert. These plants include some varieties of Yucca trees, Creosote and Beavertail Cactus. The waxy coating blocks the plants pores, trapping the moisture inside to prevent them from drying out.
It is called the cuticle.
Keep water out.