Crown Conch (King's Crown Conch)

Phylum: Mollusca, Class: Gastropoda, Order: Neogastropoda, Family: Melongenidae, Genus: Melongena, Species: Melongena corona · Melongenidae (Crown Conch family) · Gastropod (univalve, spiral shape, whole shell)

Crown Conch (King's Crown Conch)

Species

Melongena corona

Shell Type

Gastropod (univalve, spiral shape, whole shell)

Family

Melongenidae (Crown Conch family)

Size

Approximately 2 to 3.5 inches, which is typical for adult specimens of this species. Adults generally range from 2 to 5 inches.

Color & Pattern

Cream to light brown base with dark brown or reddish-brown spiral banding, often featuring mottled patterns and distinctive dark zones around the spines and aperture.

Rarity

Common

Habitat

Shallow marine and brackish waters, commonly found in salt marshes, mangrove swamps, intertidal mudflats, and seagrass beds.

Geographic Range

Southeastern United States, particularly Florida and the Gulf of Mexico, extending into the Caribbean.

Description

A robust, heavy marine snail shell characterized by a distinctive row of sharp spines adorning the shoulder of the body whorl. The spire is moderately low with a tapering canal, and the surface displays strong growth lines and spiral ridges.

Key Features

Prominent spines along the shoulder of the body whorl, a relatively low spire, and a distinctively patterned exterior with dark spiral bands.

Collector Value

Moderately popular among regional shell collectors, typically valued at low to moderate prices depending on size, spine development, and color variations.

Condition Notes

Good to Fine condition with natural coloration intact, minor wear on the apex typical of beach or marsh-collected specimens.

Interesting Facts

Crown conchs are voracious predators in salt marshes, feeding on bivalves such as oysters and clams, and they are remarkably tolerant of varying salinity levels.

Ecological Role

Acts as an important carnivorous predator controlling bivalve populations in salt marsh ecosystems, and provides empty shells as secondary homes for hermit crabs.

Similar Species

Melongena bicolor and Pugilina morio, which can be distinguished by differences in geographic range, spine configuration, and overall spire proportions.

Beach Finding Tips

Look along mangrove roots, salt marsh borders, and mudflats during low tide in the southeastern United States, especially after storm events.

Identified on 9/16/2026
Crown Conch (King's Crown Conch) | Sea Shell Identifier