#invasive algae

Nuisance alga spreading rapidly at Papahānaumokuākea Marine National Monument

Scientists have confirmed the presence of Chondria tumulosa, a nuisance alga that can overgrow coral reefs, within the Papahānaumokuākea Marine National Monument, raising concerns about its impact on Hawaiʻi’s coral reef ecosystems.

Coral Reef Damage, Invasive Alga at Papahānaumokuākea

NOAA and partner scientists returned to O’ahu on Tuesday, Aug. 13, 2019, after completing a 22-day expedition in Papahānaumokuākea Marine National Monument aboard the NOAA ship Rainier.

Annual Invasive Species Week Highlights Top 10

This week marks the start of the 3rd Annual Hawaiʻi Invasive Species Awareness Week. In observance, state agencies and private partners working to rid the islands of these damaging species are highlighting 10 particularly bad offenders.