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The aptly named Toxic Reef Crab (also referred to as the Devil Crab), Zosimus aeneus, can be so toxic as to kill within a few hours of consumption and has been reported to be used by Pacific Islanders as a means for suicide. This crab's muscles store two of the most lethal toxins— tetrodotoxin and saxitoxin.
These gorgeous crabs are easy on the eyes but be sure to avoid them on the dinner plate. Eating a crab will kill the diner in a matter of hours.
They have evolved excellent camouflage skills, allowing them to blend seamlessly with their rocky reef environments. This adaptation helps them avoid predation by blending into their surroundings.
These crabs are primarily nocturnal, displaying heightened activity during the night. They tend to retreat to their hiding places during the day to minimize exposure to potential predators.