Edward Ryan Makuahanai Aikau was a Hawaiian lifeguard and surfer. As the first lifeguard at Waimea Bay on the island of Oahu, he saved over 500 people and became famous for surfing the big Hawaiian surf, winning several awards including the 1977 Duke Kahanamoku Invitational Surfing Championship. The Eddie Aikau Big Wave Invitational is named in his honor. He was also a crew member on the Polynesian voyaging canoe Hōkūleʻa.

Big wave surfing is a discipline within surfing in which experienced surfers paddle into, or are towed into, waves which are at least 20 feet high, on surf boards known as "guns" or towboards. Sizes of the board needed to successfully surf these waves vary by the size of the wave as well as the technique the surfer uses to reach the wave. A larger, longer board allows a rider to paddle fast enough to catch the wave and has the advantage of being more stable, but it also limits maneuverability and surfing speed.