Most marine animals, particularly marine mammals and fish, are very sensitive to sound. Noise can travel long distances underwater, blanketing large areas, and potentially preventing marine animals from hearing their prey or predators, finding their way, or connecting with mates, group members, or their young. Decreased species diversity in whales and dolphins was related to an increase in seismic noise. Naval sonar has killed individuals and perhaps even genetically-isolated local populations of whales. Invertebrates such as lobster, crab, and shrimp also show noise impacts. Noise has deafened fish, produced dramatically reduced catch rates, caused stress responses, and interfered with fish communication, schooling, and possibly the selection of suitable habitat.