The Hawaiian Ko‘a (coral) card was developed to record changes in color of the main species of Hawaiian corals and provide a tool for monitoring color changes as an indicator of coral health. The Ko‘a card was designed for use by everyone, including the community, citizen scientists, researchers, educators, students, resource managers, recreational users, and visitors! Anyone can make a difference!

Ko'a card


Watch our training video!

How to use the Ko‘a card

Enter Data Here

Download datasheet

Where to pick up Ko’a cards:


– Please contact Sari Pastore at Limahuli Garden and Preserve (

-Local Division of Aquatic Resources office

Maui and Kona

-Please contact local Division of Aquatic Resources office


-Aaron’s Dive Shop, Kailua

-O‘ahu Division of Aquatic Resources Office: 151 Punchbowl St #330, Honolulu, HI 96813

-Please check our website for future O‘ahu outreach events where we will distribute Ko‘a cards