Dive acceleration was good and dive speed was excellent. There are diving equipment for rent at nearby dive shops. They are unique among passerines for their ability to dive and swim underwater. A submarine, though, could dive and escape aerial attack. Walruses do not often dive very deep, as they feed in shallow water. Voronoy went into a sharp dive and headed down. The Japanese were unaware that the submarines could dive so deep. Larger penguins can dive deep in case of need. Preparations for such a deep dive were extensive. The maximum depth recorded during this record-setting dive was . Species such as sperm whales can dive to , although more commonly . The maneuver consists of slipping into a steep, straight dive and applying full thrust. He increased his dive and angle and headed down. A move during the dive could jam the gun. Pinnipeds may dive during foraging or to avoid predators.