DOLPHIN PAIR - 3D Postcard Lenticular Greeting CardDOLPHIN PAIR 3D Lenticular Postcard Greeting Card 4x6 inches In clear protective sleeve Bottlenose Dolphins live in groups, typically of 10 30 members, called "pods". They often work as a team to harvest schools of fish, their primary food. They emit clicking sounds and listen for the return echos to determine the location and shape of nearby objects, including prey. Bottlenose Dolphins also use sound for communication, emitting squeaks and whistles.