DLNR press release (17 August 2010) - The use of native collector urchins to manage invasive seaweed on a patch reef in Kaneohe Bay - HEAR
Corals on a patch reef in Kaneohe Bay are kept clear of invasive algae by native sea urchins that have been placed there to graze the algae.

Corals on a patch reef in Kaneohe Bay are kept clear of invasive algae by native sea urchins that have been placed there to graze the algae.

Healthycoralreefurchins