The Sea Star Plushie is a non-member den item that was released on March 15, 2012. It can be obtained by "touching" all five different varieties of sea stars in the Touch Pool mini-game at Tierney's Aquarium.
This is a small plushie that is shaped like a starfish. It has an orange, star-shaped body with five "legs" that seem wide and puffy. The plushie also has two shiny black eyes in the center and several light-orange stitch marks. This item has only one version.