common bubble snail vs Ferny Azolla

Akera bullata compared with Azolla pinnata

Taxonomic Classification

Rank	common bubble snail	Ferny Azolla
Kingdom	Animalia (động vật)	Plantae (thực vật)
Phylum	Mollusca (động vật thân mềm)	Tracheophyta
Class	Gastropoda (Lớp Chân bụng)	Polypodiopsida (Lớp Dương xỉ)
Order	Aplysiida (Aplysiida)	Salviniales (Bộ Bèo ong)
Family	Akeridae	Salviniaceae
Genus	Akera	Azolla
Species	Akera bullata	Azolla pinnata

Conservation Status

common bubble snail

LC — Least Concern

Ferny Azolla

LC — Least Concern

Physical Characteristics

Attribute	common bubble snail	Ferny Azolla
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.

Ferny Azolla

Habitat

Found across multiple habitat types including deserts and xeric shrublands, tropical and subtropical moist broadleaf forests, and flooded grasslands and savannas spanning the Palearctic and Oceanian realms.

Range

Widely distributed across Africa (4 countries), Asia (Indonesia, Singapore, Taiwan), North America (Mexico, United States), and Oceania and the Pacific (Marshall Islands, New Zealand, Tuvalu).

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.