Kure Atoll, 50 feet

He'eia, Oahu, 2 feet

Makua, Oahu, 20 feet

Fish Hole, Midway Atoll, 50 feet

Makua, Oahu, 20 feet

Moku o Loe, Kaneohe Bay, Oahu, 2 feet

Haleiwa trench, Oahu, 20 feet

Kewalo Pipe, Oahu, 60 feet

Kewalo Hump, Oahu, 90 feet

Sharks Cove, Oahu, 35 feet

Tentative identification.  Common in massive corals and limestone reef rock.  The worm's body creates a tunnel and extends a pair of colorful crowns that function as gills and food gathering devices.  The crowns are rapidly retracted when disturbed and the hole is covered by a hard operculum.  Crown diameter of 0.6 inch.  Hawai'i & the Indo-Pacific.