Pu’uiki Point

Coastal Restoration & Native Plant Propogation

“My mission for this project is to build a legacy of non-disruptive natural farming to create a ‘live off the land’ kind of environment for our families and communities though conserving the Hawaiian ecosystem, restoring native biodiversity, reforestation, and environmental bioremediation. Ultimately, I want to turn the land back into a ‘āina for the utilization of our future generations to come.”

Arianna Scalera

Agripharmatech | (808) 772 0036

Coastal Erosion: how does it happen?

The graphic above depicts multiple processes relative to coastal erosion. On the North Shore of O’ahu specifically, waves (and flooding) are one of the largest factors in shoreline deterioration. While constructive waves aren’t too detrimental, destructive waves can be devastating. The North Shore of O’ahu faces these waves every year. Scroll to see some of the effects.

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The Problem

Coastal erosion is a term for the removal of beaches or dunes by waves, tidal currents, wave currents, or drainage. Waves, caused by storms and wind cause coastal erosion.

The photo below depicts the coastal erosion & debris pollution at Pu’uiki Point caused by waves & the March 2021 major flooding event in Waialua-Hale’iwa: 


The Solution

The Pu’uiki Restoration Project is restoring Pu’uiki Point’s natural plant palate, creating multiple lines of defense against erosion including: naupaka, polinalina, ‘aki’aki, and pōhuehue. For more information on the benefits of native plant propagation for coastal erosion defense, please click on the tab above labeled “Plant Propogation.”

The photo below portrays the beginning of the coastal restoration process on the beach side. Photo taken November 8th, 2021, stay tuned for progress updates!

Polinalina (O’ahu variety of Pohinahina) is visibly crawling down the beach from its original propagation site. This proves as evidence of successful implementation!

Why Native Plants?

When planted in the correct habitat, Native Hawaiian plants can grow with less irrigation, less chemical pest control, and can handle drought conditions better than other common, introduced plant species.

Native plants can also provide significant ecological benefits such as reducing soil erosion,

as well as stream bank stabilization, and phytoremediation (the uptake of pollutants through a plants root system).

Pictured above are a few Native Hawaiian plant species we use to prevent coastal erosion! They are useful for a number of reasons:

They are salt-tolerant, meaning they can grow next to salt water well (many plants cannot do this)

They are “ground covers” meaning that they grow across large areas

Ground covers are beneficial for erosion restoration because their roots act similarly to a “spider web” under ground, and strengthen the landscape (an effective defender against erosion)

Did You Know?


Approximately 90% of Native Hawaiian plant species are found nowhere else in the world, AND about 400 Native Hawaiian plant species are listed as endangered or threatened by the U.S. Fish and Wildlife Service.

Educational Resources


A visit or field trip with our Pu’uiki Restoration Project directly aligns with multiple K-5 NGSS Standards, as well as Sustainable Development Goal 13, “Climate Action.”

5-LS1-1     5-ESS3-1     4-LS1-1     4-ESS2-1     3-ESS3-1

3-LS3-2     3-LS4-3     2-ESS1-1     2-ESS2-1     2-LS4-1

Why Education is Crucial:

  • Raises awareness about human and institutional capacity on climate change mitigation, adaptation and impact reduction, and early warning systems
  • Promotes mechanisms for raising capacity for effective climate change-related planning and management

Primary Education Learners:

  • Develop a basic understanding of climate science, including: carbon cycles, effects of greenhouse gases and their physical impacts (such as the rise in sea-level and extreme weather conditions)
  • Become aware of climate vulnerability and can analyze the impacts of human activities/consequences of personal actions on climate change