[2] Loimia medusa has long bluish white feeding tentacles that give the appearance of spaghetti noodles under any kind of rubble or rocks.

[3] Under those rocks, it has a body that is surrounded by a tube consisting of bits of shell and gravel,[4] creating a tube that has a tough membranous lining with segments.

[5] Loimia medusa prefers tropical oceans, such as the Indo-Pacific and the Western Central Atlantic,[6] including reefs off of the Hawaiian Islands.

[7] Its habitat includes spaces such as tidepools, brackish waters, and bays that consist of rubble.

[6] They can also be found in sand and coral reefs in the deeper waters across the Hawaiian islands.