Sundial Sea Snail

The Sundial Sea Snail (Architectonica perspectiva) is a marine (saltwater) gastropod mollusc. It is also known as the Staircase Shell. Gastropod means stomach-footed.

The Sundial Sea Snail has a white to yellowish-brown cone-shaped shell, lighter at the edges, and lighter underneath. The spirals of the shell have shades of black, white, and brown. Its long thin body and tentacles are striped. It has a horny, dark-brown operculum. The operculum is attached at the muscle to the upper surface of the back part of the snail’s ‘foot.’ 

The shell grows to about 5-7 centimetres (2-3 inches) in diameter.

Sundial Sea Snail

The Sundial Sea Snail is native to the Indo-Pacific Ocean (the Indian Ocean and the Pacific Ocean), especially in the waters near India and south to Papua New Guinea. 

It prefers staying on the bottom of the ocean on fine sand. It also lives near coral on coral reefs.

Photographer: Martina Nicolls


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