This opah is about as close to a full-body warm-blooded fish as science has yet discovered. Here, biologist Nick Wegner prepares to insert a temperture sensor into the animal’s pectoral muscles. The device will record internal and external temperatures following the fish’s release.
What you see here are three people enjoying their day at the beach. What you don’t see are the many, many microbes that are an integral part of their bodies. Indeed, in terms of the numbers of cells present, we are all more bacterial than human.
A traveler shows off a massive coco-de-mer nut. This palm seed’s shape isn’t obvious until an outer green husk is stripped off. Photo credit: Niall Corbet