"He'e Nalu No Ka Mauna" was held on Sunday. It consisted of surfers from four islands paddling out in solidarity with the protectors of Mauna Kea.

Paddle-outs were held on Puhi Bay in Hilo, Laniupoku Beach Park on Maui, Makaha Beach Park on O'ahu, and Waioli Beach Park on Kaua'i.

On O'ahu, over 500 surfers participated. 

Daniel Ikaika Ito is a surfer who helped organize the multi-island paddle-out. 

"The relationship of mauka to makai is something surfers are keenly aware of and that's been passed down to us from the kupuna," he said.

Ito brought his one-year-old son Keaweokapohuku, which made it a particularly special experience. 

"While he may not remember it we all have pictures to remember the day by. I think his generation and future generations will be grateful that we took a stand and I hope that they carry on what our ancestors started and what we continue to perpetuate," Ito added.