The term 'Variety of Whale' encompasses three different species of whales: the SEI whale (3 letters), the HUMPBACK whale (8 letters), and the SPERM whale (5 letters). The SEI whale is a large baleen whale that can reach lengths of up to 60 feet and weigh up to 40 tons. The HUMPBACK whale is a medium-sized baleen whale that can reach lengths of up to 50 feet and weigh up to 40 tons. The SPERM whale is the largest of the toothed whales, reaching lengths of up to 70 feet and weighing up to 57 tons. All three species are found in oceans around the world and play an important role in the marine ecosystem.