The whales are again toothless whales and baleen whales. Whaling was very popular in the early 20th century when whale meat was used as a table dish and whale oil served as fuel for various machines or lamps. Although various countries signed bans on whaling in the 1980s, the decades-long whaling industry has left few whales. Taiwan Whale An extinct whale. The ear bones of this whale were discovered during the Japanese invasion of Hsinchu and were named by the then paleontologist Huang Dunyou. From the scientific point of view, it should look similar to the blue whale known today. Pilot whale It is the most widely distributed species in the cetaceans. It seems to be in groups, sometimes as many as hundreds. Their teeth are much less than other cetaceans and may be related to eating squid. Great winged whale There is the longest pectoral fin in all whales. Their generic name comes from the Greek "μεγα-πτερα", meaning "large wings." sperm whale It is the biggest tooth whale. Sperm whale is a diving master who can dive to a depth of more than 1,000 meters deep. Due to the wide range of whale oil in the head, it is the most recently captured medium and large cetaceans. Killer Whale It is a highly social whale. Killer whale has complex social behaviors and hunting skills, and also uses sound to communicate. These are proof that the killer whales have their own culture.