This is the stuff of nightmares — and one of the most incredible examples of nature’s ingenuity.

What you’re looking at is a dead tarantula completely overtaken by a parasitic “zombie fungus” from the genus Cordyceps. The striking orange spikes sprouting from its body are the fruiting structures of the fungus, which burst out after killing its host to release spores into the environment.

The eerie fun fact is true: The tarantula’s dramatic color change from dark brown to vibrant orange isn’t just surface-level. The fungus has consumed and replaced much of the spider’s internal tissues with its own mycelium (fungal cells). In essence, the tarantula has been transformed from the inside out — becoming a living (then dead) vessel for the fungus.

This particular species of Cordyceps that infects tarantulas is quite rare. Like its more famous relatives that infect ants (the inspiration for The Last of Us), it hijacks the host’s body, eventually taking control of its nervous system, killing it, and then using the corpse as a platform to grow these elaborate spore-dispersing structures.

Despite its gruesome reputation, this is simply nature at work — a highly specialized parasite ensuring its own survival in the competitive rainforest ecosystem.

A terrifyingly beautiful reminder of how wild and strange the natural world can be.

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