Trigonostoma scalare is a species of sea snail, a marine gastropod mollusc in the family Cancellariidae, the nutmeg snails.
This species attains a length of around 30 mm, while large specimens can reach 45 mm. It has a consistent spiral staircase-like shaped shell, with colors ranging from white, yellow, orange, and brown. It's not known how exactly it feeds, but it's speculated that it's a suctorial feederâ living off the body fluids and predator eggs of other animals.
This species of sea snail is moderately common, and it can be found in the Philippines, Sri Lanka, Australia, and the Indo-West Pacific. Most specimens are obtained by tangle nets in the Philippines, and they inhabit waters of moderate depth, around the depth of -10 to 30m.