In practice, the shaka is far more nuanced.
Some say the only requirement is an extended pinky and thumb. Others say shaking the shaka is a no-no.
Those from beach or rural communities tend not to shake it. But in the capital city of Honolulu, it’s common.
“It’s just a strong movement — one movement,” said Chase Lee, who grew up just outside Honolulu. He was taught never to shake the shaka. If you do, “you’re a tourist,” he said.
But Erin Issa, one of his colleagues at Central Pacific Bank, likes to wag hers.
“I’m a very animated person,” she said. “I feel awkward if I’m just standing still.”
She prefers to flash a shaka with the palm facing outwards, as a sign of respect: “It’s shaka-ing to you, not to me.”
“As long as you get your pinky finger and your thumb out, you can wave it or you can just do just a flat shaka,” Dennis Caballes, a Honolulu resident, said while fishing at a beach park.
What does it mean?
The shaka carries friendliness and warmth – aloha spirit. Some hold it low when greeting a child, and some like to flash double shakas. It can convey greetings, gratitude or assent, or it can defuse tension. It was particularly useful in the early days of the COVID-19 pandemic, when people were afraid to shake hands.
“It’s such a versatile gesture,” said state Representative Sean Quinlan, who introduced the House bill at the behest of a documentary filmmaker exploring the sign’s backstory.
Big Island state Representative Jeanné Kapela, one of the House bill’s co-sponsors, said residents were “so lucky to have a visual signal for sharing aloha with each other.”
Shakas can avert altercations when people are cut off in traffic, said Wakai, the state senator who introduced the Senate version.
“The angst toward that driver kind of just immediately gets reduced,” Wakai said.
Where does the shaka come from?
The prevailing story of the shaka’s origin traces back to a Native Hawaiian fisherman named Hāmana Kalili, who lived on Oahu’s North Shore in the early 1900s. Mailani Makaʻīnaʻi, his great-great-granddaughter, wants the bills amended to include his name – something legislators are considering.
Kalili lost three fingers in a sugar mill accident, she said.
After the mishap, Kalili worked as a guard on a train. Kids who jumped the train for a free ride would curl their middle fingers to mimic Kalili’s injured hand, giving other train-jumpers the all-clear, said Steve Sue, who researched shaka for his documentary.
Other residents adopted Kalili’s three-finger-less wave more broadly, according to family lore, and it spread, possibly fuelled by the waves of tourists that began arriving after World War II.
“I love the compassion part of it, you know, where, ‘Oh, okay, he doesn’t have all three fingers. So, I’m going to say hi the way he’s saying hi,’” Makaʻīnai said. “It’s the idea that ... I’m like you and you’re like me.”
There’s a bronze statue of Kalili, his right arm extended into a shaka, at the Polynesian Cultural Centre in Laie.
There are various theories about how the term “shaka” became associated with the gesture. Some have suggested that the name came from Japan’s Shaka Buddha.
How is the shaka used now?
The sign has spread around the world since the surfing boom of the 1950s and ’60s. It’s popular in Brazil, where it’s been used by martial arts aficionados. Brazil soccer greats Ronaldinho and Neymar incorporated it into their goal celebrations.
The shaka is such an integral part of Hawaii life that it’s easy to miss, said Senator Chris Lee, chair of the Committee on Transportation and Culture and the Arts.
Some Honolulu city buses are outfitted with a digital shaka light that bus drivers can turn on to thank motorists for letting them merge. Texters have co-opted the “call me” emoji to symbolise the shaka, and local station KHON-TV has ended each evening newscast since the 1970s with clips of people flashing shakas.
Longtime KHON anchor Howard Dashefsky said throwing a shaka is almost a reflex when people in the community recognise him and call his name.
“There’s a lot of other places where you only get a one-finger gesture,” he said.
Shakas also come out naturally when people from Hawaii are somewhere else in the world and want to display connection to their island roots.
Businesses often use the shaka to project community belonging.
Central Pacific Bank, for example, called their digital checking account Shaka Checking at the suggestion of electronic banking manager Florence Nakamura.
“It makes people feel good when they receive one,” she said.