Deep Look
Upside-Down Catfish Doesn't Care What You Think
This catfish looks confused, but swimming belly-up helps it camouflage and breathe better.
This catfish looks confused, but swimming belly-up helps it camouflage and breathe better.
Once used for questionable treatments, leeches now help doctors to reattach body parts.
A tick uses a mouth of hooks to cling to you. But there *is* a way to pull it out.
Most firefly flashes are pure romance. One copycat uses them to lure others to their doom.
Some very special physics help Pacific mole crabs dig with astonishing speed.