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Join us for the 4th Annual
Hawai‘i Community Intertidal Exploration!

Sunday, May 5 2024
One‘ula Beach Park, ‘Ewa Beach

8:00am –10:00am
Protocol at 8:00 am


Our intertidal exploration will focus on limu (algae).

Exactly where is this event?


How do I participate in the biodiveristy survey? (optional)

Volunteers will facilitate the use of iNaturalist, help with identifications, and share information about the intertidal and limu!​​​

The event will take place rain or shine. However, if the weather situation is so dangerous we need to cancel we will update the website to clearly indicate this event has been canceled. 

What to Bring

  • Wear closed-toed shoes to protect your feet and reduce the possibility of slipping (e.g., reef walkers, tabis, water shoes, old sneakers). 

  • Bring your charged phone. To take pictures and use the iNaturalist app. 

  • Sun protection (e.g., reef-safe sunscreen, hat, long sleeves)

  • Water! Bring your filled water bottles.  

Respect the Environment​

  • Please show respect. Hawai‘i's coasts are 'ocean gardens' tended by local communities who have intimate knowledge of these places. This scientific knowledge is the result of kilo, careful observation, by generations of Kanaka ʻŌiwi (Native Hawaiians). 

  • When picking limu, leave the holdfast (where it is attached to the rock) so the limu will grow back. Do NOT pick algae from limu-protected areas. 

  • The intertidal is a place that many organisms call home. Respect their space by replacing overturned rocks and being mindful of your footsteps. 

  • If you handle organisms, keep them wet, treat them gently, and return them to where you found them. 

  • Most wild organisms do not fare well in tanks. Snap a picture and leave your favorite critters at the beach.​

Safety First

  • Take turns with a buddy to watch the ocean and keep your knees bent to stabilize yourself. 

  • Do not put your fingers into holes or crevices. Although most intertidal organisms are harmless, some may bite, pinch, or sting. 

FREE Intertidal Identification Resource

Questions? Comments?

Contact Joanna Philippoff ( or Anuschka Faucci ( for more information.

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