Kelp hair challenge

Kelp forests can sequester up to 4x as much carbon as land forests, but they're under threat. Kelp forests have declined by as much as 90% in recent decades. We need your help to bring them back. For everyone who takes the #KelpHairChallenge, we're restore 1 square foot of kelp forest. Details below!

the sequoias of the sea

Kelp are large brown algae that grow in cool coastal waters. Like land-based forests, kelp forests are vital ecosystems that provide food and shelter for biodiverse marine life. Kelp forests are also essential to protecting coastlines from storms and sea level rise, absorbing excess nutrients in the water, and reducing ocean acidification.

the problem

ecosystem in crisis

Kelp forests have declined by as much as 90% in recent decades due to climate change, warming waters and a surge in purple urchin populations.

the solution
kelp forest restoration

We're working with our friends at SeaTrees to restore kelp forests in Southern California. Divers identify and clear 'urchin barrens', allowing kelp to regrow into a healthy and thriving ecosystem.


Help us restore California's kelp! For each share using our custom IG kelp hair filter, we'll restore 1 square foot of kelp with SeaTrees.

Step 1:

Find the filter via the 12 Tides homepage on Instagram.

Step 2

Post a story using the kelp hair filter and #KelpHairChallenge.

Step 3

Nominate three friends to join you in the challenge!

let's do this!

Together we can turn urchin barrens into thriving marine ecosystems. Join us and SeaTrees to restore California's kelp!