Gemeine Kugelschnecke vs Intermediate Periwinkle

Akera bullata compared with Vinca difformis

Key Differences

Gemeine Kugelschnecke is Least Concern while Intermediate Periwinkle is Not Evaluated.

Taxonomic Classification

Rank	Gemeine Kugelschnecke	Intermediate Periwinkle
Kingdom	Animalia (Tier)	Plantae (Pflanzen)
Phylum	Mollusca (Weichtiere)	Magnoliophyta (Flowering Plants)
Class	Gastropoda (Schnecken)	Magnoliopsida (Dicots)
Order	Aplysiida (Aplysiida)	Gentianales (Enzianartige)
Family	Akeridae	Apocynaceae
Genus	Akera	Vinca
Species	Akera bullata	Vinca difformis

Conservation Status

Gemeine Kugelschnecke

LC — Least Concern

Intermediate Periwinkle

NE — Not Evaluated

Physical Characteristics

Attribute	Gemeine Kugelschnecke	Intermediate Periwinkle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gemeine Kugelschnecke

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

Intermediate Periwinkle

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Found across Europe (7 countries).

Gemeine Kugelschnecke

The common bubble snail (<em>Akera bullata</em>) is a marine gastropod mollusc found in the coastal waters of Denmark, Norway, Portugal, and Sweden. This species typically inhabits terrestrial and aquatic environments including forests and freshwater-adjacent marine areas, often occurring in shallow subtidal and intertidal zones of temperate European seas. It is classified as Least Concern on the IUCN Red List. As a member of the family Akeridae, the common bubble snail is characterized by its thin, fragile shell and its ability to swim briefly by flapping its large, wing-like parapodia. The species often forages on algae and detritus in sandy and muddy seafloor habitats, particularly in sheltered bays and estuaries. The common bubble snail typically aggregates in large numbers during the spawning season, producing gelatinous egg masses. Biological traits of this species remain poorly documented in the scientific literature.