Huelo Islet Seabird Sanctuary is a small 1-acre islet off the coast of Moloka'i near Kalawao. This islet is roughly 197-feet in elevation. Huelo Islet is considered one of the most botanically significant islet in the Hawaiian chain, being home to roughly 42 plant species (16 of which are endemic). 

Huelo Islet is one of six seabird sanctuary islets around the island of Moloka'i. The primary seabird that calls this islet home is the 'Ua'u Kani (Wedge-tailed Shearwater). Due to its' status as a seabird sanctuary, Huelo islet is closed to the public.