How long does an orcas dorsal fin get?

Orcas' dorsal fins vary greatly in length depending on the individual and the species. Adult male orcas can have dorsal fins up to 1.8 meters (5 feet 11 inches) tall, while adult females have dorsal fins that are typically shorter, reaching up to 1 meter (3 feet 3 inches). The dorsal fins of juvenile orcas are much smaller, and grow as the orca ages.