Turritopsis nutricula McCrady, 1857

Colonies erect, 3 - 4 cm high, bushy, branched and straggling, stems fascicled, covered in a fine perisarc. Branches joined to stem for a short distance before diverging.

One hydranth 1 - 2 mm long, terminal on each branch, hydranth body naked, with scattered filiform tentacles.Medusa buds borne on the body of hydranth, pear-shaped with eight marginal tentacles at release.

Adult medusa deep bell-shaped, 1 - 2 cm wide, stomach cross-shaped, surrounded by four large gonads, mouth with four elongated lobes. Margin of bell with up to 100 tentacles.

Colour: Perisarc of colony buff-coloured, hydranths pink, tentacles white. Bell of medusa transparent, gonads rose red.