DLNR press release (17 August 2010) - The use of native collector urchins to manage invasive seaweed on a patch reef in Kaneohe Bay - HEAR
Rice coral in Kaneohe Bay partly covered in the invasive algae Kappaphycus.  Invasive algae grows faster than coral.  Its thick growth can block sunlight, smother and kill coral, which also reduces habitat for other reef dwellers.

Rice coral in Kaneohe Bay partly covered in the invasive algae Kappaphycus. Invasive algae grows faster than coral. Its thick growth can block sunlight, smother and kill coral, which also reduces habitat for other reef dwellers.

InvasivealgaeKaneohereef