The Common Delphinula, Dolphin Shell, scientifically known as Angaria delphinus, is a captivating marine snail species that belongs to the family Angariidae. This gastropod is recognized for its distinctive shell morphology and intriguing ecological role within its marine environment.
Description & Characteristics
The Common Delphinula, Dolphin Shell is an attractive species, displaying a conical, spire-shaped shell with a distinctive, sculptured surface. It is typically characterized by a series of prominent spiral ridges and fine, intricate lines. The shell of Angaria delphinus can vary in color, ranging from cream and beige to reddish-brown and even shades of grey. This variation in color can be attributed to environmental factors and the specific location of the snail. The shell aperture is rounded, and the outer lip often exhibits a slightly flared or thickened appearance. The maximum size of the Common Delphinula, Dolphin Shell can reach approximately 40 mm, making it a moderately sized gastropod.
Habitat and Occurrence
The Common Delphinula, Dolphin Shell typically inhabits the intertidal zone and shallow subtidal waters, primarily in the Indo-Pacific region. This species demonstrates a preference for rocky reefs, coral reefs, and other hard substrates where it can securely attach itself. Its presence extends from the tropical waters of the Red Sea and the Indian Ocean to the western Pacific Ocean, including Australia. The Common Delphinula, Dolphin Shell is commonly found in the neritic zone, specifically the littoral and sublittoral zones, which signifies its adaptation to these relatively shallow marine environments.
Taxonomy
The species Angaria delphinus belongs to the Class: Gastropoda, Order: Trochida, and Family: Angariidae. This classification places it within a group of marine snails that exhibit a wide range of shell shapes and ecological adaptations.
Feeding
The Common Delphinula, Dolphin Shell is an herbivorous gastropod, primarily feeding on algae and epiphytes. It grazes on surfaces, scraping off algae with its radula, a specialized feeding structure found in many gastropods. Angaria delphinus plays a role in controlling algae growth on the surfaces of its habitat, contributing to the balance of its ecosystem.
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