Blue Flag vs European otter

Iris versicolor compared with Lutra lutra

Key Differences

• Blue Flag is Not Evaluated while European otter is Vulnerable.

Taxonomic Classification

Rank	Blue Flag	European otter
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum	Arthropoda (động vật Chân khớp)	Chordata (động vật có dây sống)
Class	Insecta (côn trùng)	Mammalia (lớp Thú)
Order	Mantodea (Bộ Bọ ngựa)	Carnivora (bộ Ăn thịt)
Family	Eremiaphilidae	Mustelidae (Weasels & Otters)
Genus	Iris	Lutra (Otters)
Species	Iris versicolor	Lutra lutra

Evolutionary Relationship

Blue Flag and European otter share a common ancestor at the Kingdom level: Animalia. (động vật)

Conservation Status

Blue Flag

NE — Not Evaluated

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

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

Habitat & Geographic Range

Blue Flag

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (10 countries) and North America (Canada, United States).

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.

Blue Flag

The Blue Flag (Iris versicolor) is a species in the genus Iris. Typically found in virtually all terrestrial and freshwater habitats.

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 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden