The coloration of the manubrium, bulbs, and gonads is yellowish.
Gonads are located near the center of the radial canals.
Cosmopolite. In the Arctic, found in the Barents Sea, Chukchi Sea, and White Sea
Hydroid Obelia geniculata (Hincks)
Umbrella flat, inner side bulges outward during movement. Approximately 100 tentacles are placed in the same plane as the body. Velum is rudimentary. 8 statocysts, each one with 1 concretion. Gonads are located near the center of the radial canals, are oval in shape; in females usually carry several large eggs. Young specimens have 16-24 tentacles, gonads are usually located near the manubrium.
