are arranged along the upper and side ridges of the head, arising from the pair of feather-like nuchal organs which analyze chemical signals in the sea. The fifth pair of appendages are grooved and coiled feeding palps arising from below the mouth, which is located in the front-bottom corner of the head. Their internal anatomy is relatively visible from the outside since their outer body is semi-transparent. Two parallel ventral nerve cords run lengthwise throughout the body, fusing into two pairs of ganglia in each segment. The gut forms three loops in the second to sixth segments. The circulatory system consists of a heart body and large vessels leading to the gills. The pair of nephridia extends from the first segment to the fifth segment. The female gonads are located in the second to fourth segments with beige-colored grape-like clusters of variously-sized ova (with a maximum diameter of ). Behavioral characteristics Not much is known of this creature’s behavior other than its ability to swim with proficiency using their paddle-like notopodia. It is categorized as a suspension eater since it consumes marine snow, which consists of pieces from animals, plants, feces and other organic materials that precipitate from the higher parts of the ocean towards the abyss. In total, sixteen specimens were observed and seven were collected within just a few dives suggesting that this animal is a common member of the benthopelagic community of the Celebes Sea basin. References External links Polychaetes