European otter vs marsh arrowgrass

Lutra lutra compared with Triglochin palustris

Key Differences

European otter is Vulnerable while marsh arrowgrass is Least Concern.

Taxonomic Classification

Rank	European otter	marsh arrowgrass
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Liliopsida (Monocots)
Order	Carnivora (Carnivorans)	Alismatales (Alismatales)
Family	Mustelidae (Weasels & Otters)	Juncaginaceae
Genus	Lutra (Otters)	Triglochin
Species	Lutra lutra	Triglochin palustris

Conservation Status

European otter

VU — Vulnerable

Trend: Stable →

marsh arrowgrass

LC — Least Concern

Physical Characteristics

Attribute	European otter	marsh arrowgrass
Diet	Carnivore	—
Average Lifespan	10 years	—
Average Length	1.0 m	—
Average Weight	10.0 kg	—

Habitat & Geographic 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.

marsh arrowgrass

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and North America (Canada).

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.