Dwarf Bladder-moss vs European otter

Physcomitrium sphaericum compared with Lutra lutra

Key Differences

• Dwarf Bladder-moss is Critically Endangered while European otter is Vulnerable.

Taxonomic Classification

Rank	Dwarf Bladder-moss	European otter
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Bryophyta	Chordata (Chordates)
Class	Bryopsida (Bryopsida)	Mammalia (Mammals)
Order	Funariales (Funariales)	Carnivora (Carnivorans)
Family	Funariaceae	Mustelidae (Weasels & Otters)
Genus	Physcomitrium	Lutra (Otters)
Species	Physcomitrium sphaericum	Lutra lutra

Conservation Status

Dwarf Bladder-moss

CR — Critically Endangered

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

Attribute	Dwarf Bladder-moss	European otter
Diet	—	Carnivore
Average Lifespan	—	10 years
Average Length	—	1.0 m
Average Weight	—	10.0 kg

Habitat & Geographic Range

Dwarf Bladder-moss

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Luxembourg, and Sweden. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

European otter

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

European otter

Sleek semi-aquatic mustelid found along clean rivers, streams, and coastlines across Europe and Asia. European otters can reach 1.3 meters in length and are highly skilled fish hunters, using sensitive whiskers to detect prey movements. Requiring unpolluted water with abundant fish, they are an indicator species for freshwater ecosystem health. Once nearly extinct in Western Europe from hunting and pollution, populations have recovered significantly following water quality improvements.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇸🇪 Sweden