WASHINGTON — Some dolphins in Australia have a special technique to flush fish from the seafloor. They hunt with a sponge on their beak, like a clown nose. Using the sponge to protect from sharp rocks ...

A bottlenose dolphin wearing a marine sponge on its nose to forage swims in Shark Bay, Australia. A bottlenose dolphin near Australia wears a marine sponge on its nose to forage. WASHINGTON — Some ...