What is that?

An octopus stinkhorn or devil's fingers are a fungus indigenous to Australia and New Zealand, and an introduced species in Europe, North America and Asia. The young fungus erupts from a suberumpent egg by forming into four to seven elongated slender arms initially erect and attached at the top. The arms then unfold to reveal a pinkish-red interior covered with a dark-olive spore-containing gleba. At maturity, it smells like putrid flesh.