common bubble snail vs Pixie Foam

Akera bullata compared with Stereocaulon pileatum

Key Differences

common bubble snail is Least Concern while Pixie Foam is Critically Endangered.

Taxonomic Classification

Rank	common bubble snail	Pixie Foam
Kingdom	Animalia (प्राणी)	Fungi (फफूंद)
Phylum	Mollusca (मोलस्का)	Ascomycota (पुट कवक)
Class	Gastropoda (उदरपाद)	Lecanoromycetes (Lecanoromycetes)
Order	Aplysiida (Aplysiida)	Lecanorales (Lecanorales)
Family	Akeridae	Stereocaulaceae
Genus	Akera	Stereocaulon
Species	Akera bullata	Stereocaulon pileatum

Conservation Status

common bubble snail

LC — Least Concern

Pixie Foam

CR — Critically Endangered

Physical Characteristics

Attribute	common bubble snail	Pixie Foam
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

common bubble snail

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

Pixie Foam

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

common bubble snail

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.