With full captions explaining the different species, behavior, and feeding habits, Whales & Dolphins is a vibrant look at these marine mammals in vivid photographs.   Did you know that porpoises are often shy creatures and therefore most of us will very rarely encounter them in the wild? Among their species is the vaquita, tragically the most endangered species of any whale, dolphin, or porpoise. Whales and dolphins alike are renowned for their intelligent nature and fascinating social rituals. Like humans, they use vocalizations to communicate. They both have distinctive, streamlined body shapes and propel themselves through water using powerful tails and flippers. These magnificent mammals are frequently described as "sentinels of ocean health, providing key insight into marine dynamics and ecosystem quality.