The sea cucumber’s sloth-like speed should make it easy prey. But this bottom-feeder possesses a secret weapon. When under threat by, say, a crab, some sea cucumber species shoot out their guts – their intestines and respiratory tracts, and even their reproductive organs! – from their anuses. Believe it or not, certain predators find this appetising. As they dig in, the sea cucumber hides under a rock or in the sand and plots its escape. Going on with life after you’ve literally spilled your guts isn’t easy, and afterward, the sea cucumber finds itself in a kind of suspended animation for a few months, regenerating its organs and getting ready to escape the next unsuspecting crab.
Although they may appear like everyday mice, the DNA of the elephant shrew is more closely related to its jumbo namesake. Despite being smaller than even other elephant shrew species, the mammal genetically resembles an elephant way more than a mouse, according to the African Wildlife Foundation.
This new species of moth was only recently discovered. They are so unique because they only live for one day. Within 24 hours, they emerge from their cocoon, mate, reproduce, and then die. IFL Science describes it as an evolutionary wonder.