Neorapana grandis is a species of large predatory tropical sea snail, a marine gastropod mollusks in the family Muricidae, the rock snails.

[2] This species is endemic to Ecuador, specifically to the Galapagos Islands.

[citation needed] The shell of this species is 60 to 90 mm (2½ to 3½ inches) long, with brown scaly spiral ribbing.

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