Bats aren’t blind. Despite the famous idiom, bats can indeed see, but they still use their even more famous echolocation to find prey.
100 Mind-Blowing Echolocation Facts
ALL TOOTHED WHALES HAVE A ‘MELON’ IN THEIR FOREHEADS. It’s a mass of tissue which focuses the whales’ calls, vital for communication and echolocation. Like bats, they use this echolocation to “see”.