Ant Death Spiral: A circle of army ants, each one following the ant in front (because they use scent/pheromones to follow each others' trails since they are blind), becomes locked into a circular mill. They will continue to circle each other until they all die.
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Sophia Collier, River Under Me, 2012 (Carved Acrylic)
Phallus luteus is a species of fungus in the stinkhorn family. First described in 1936 as Dictyophora lutea, it was transferred to the genus Phallus in 2009.
Open stoma. Coloured scanning electron micrograph (SEM) of an open stoma on the surface of a tobacco leaf (Nicotiana tabacum). Stomata are pores found on the leaf surface that regulate the exchange of gases between the leaf's interior and the atmosphere. Stomatal closure is a natural response to darkness or drought as a means of conserving water. Each pore is controlled by two guard cells (red); the pores open when they are full of water and close when they lose water. Magnification: x960 at…