Review and images by JimoAi; edited by bmathison1972
Contrary to their common name, killer whales (Orcinus orca), also known as orcas, are a species of oceanic dolphin, although they can be considered whales as all dolphins are considered whales but not all whales are dolphins. They are the largest of all dolphins, reaching lengths of 500 cm to 960 cm with males getting to greater lengths than females and also sporting larger pectoral and dorsal fins, with some getting higher than 180 cm (that’s taller than I am!).