Beck Pocket-moss vs common bubble snail

Fissidens rufulus compared with Akera bullata

Key Differences

Beck Pocket-moss is Extinct while common bubble snail is Least Concern.

Taxonomic Classification

Rank	Beck Pocket-moss	common bubble snail
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Bryophyta	Mollusca (Mollusks)
Class	Bryopsida (Bryopsida)	Gastropoda (Gastropoda)
Order	Dicranales (Dicranales)	Aplysiida (Aplysiida)
Family	Fissidentaceae	Akeridae
Genus	Fissidens	Akera
Species	Fissidens rufulus	Akera bullata

Conservation Status

Beck Pocket-moss

EX — Extinct

common bubble snail

LC — Least Concern

Physical Characteristics

Attribute	Beck Pocket-moss	common bubble snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Beck Pocket-moss

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Luxembourg, Norway, and Sweden.

common bubble snail

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

Beck Pocket-moss

The Beck Pocket-moss (Fissidens rufulus) is a species in the genus Fissidens. It is currently classified as Extinct on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

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.