Don't let their derpy grins fool you. Lungfish are not just surviving - they're thriving in environments that would leave other species gasping for air. As well as breathing underwater like regular fish, these guys possess a built-in air conditioner – a primitive lung – that allows them to breathe air and burrow through mud during droughts.

This versatility has clearly worked out for lungfish, as these living fossils have been around for a cool 410 million years. Today, there are only six known species, with the African lungfish reaching a whopping six feet – that's about the length of a yoga mat. Next time you roll yours out, remember: the best way to endure the ebb and flow of life's challenges is to just breathe—whether through gills, lungs or both.