Male orcas have the largest dorsal fins of any marine mammal. They can be up to 6 ft. tall! Female orcas have slightly shorter and more curved dorsal fins. Orca dorsal fins act as a keel and are unique to each individual.
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Male orcas have the largest dorsal fins of any marine mammal. They can be up to 6 ft. tall! Female orcas have slightly shorter and more curved dorsal fins. Orca dorsal fins act as a keel and are unique to each individual.