Hunting was replaced by whale and dolphin tourism. Other species are the humpback whale and Bryde's whale. There has been one report of a shark attacking and killing a whale calf. These species are preyed on by the killer whale or orca. Most species are preyed on by the killer whale or orca. The NOAA is committed to protecting and recovering the humpback whale. It was one of the largest gatherings of whale sharks recorded. The narwhal is most closely related to the beluga whale. Occasionally there are sightings of the bowhead whale. Gigi was the first captive baleen whale. Ethan Van Sciver describes Ion as resembling a large, primitive whale or fish. He also had a monopoly on whale and sturgeon. The Australian pygmy blue whale diverged during the Last Glacial Maximum. Ziphiids consist of 22 species of beaked whale. Hunting a large whale usually takes several hours.