Baltische Meerassel vs Blauwal

Idotea balthica compared with Balaenoptera musculus

Key Differences

• Baltische Meerassel is Not Evaluated while Blauwal is Vulnerable.

Taxonomic Classification

Rank	Baltische Meerassel	Blauwal
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum	Arthropoda (Gliederfüßer)	Chordata (Chordatiere)
Class	Malacostraca (Höhere Krebse)	Mammalia (Säugetiere)
Order	Isopoda (Asseln)	Cetacea (Whales & Dolphins)
Family	Idoteidae	Balaenopteridae (Rorquals)
Genus	Idotea	Balaenoptera (Rorquals)
Species	Idotea balthica	Balaenoptera musculus

Evolutionary Relationship

Baltische Meerassel and Blauwal share a common ancestor at the Kingdom level: Animalia. (Tier)

Conservation Status

Baltische Meerassel

NE — Not Evaluated

Blauwal

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Baltische Meerassel	Blauwal
Diet	—	Carnivore
Average Lifespan	—	90 years
Average Length	—	30.0 m
Average Weight	—	150.0 t

Habitat & Geographic Range

Baltische Meerassel

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

Distributed across Belgium, Denmark, Norway, Portugal, and Sweden.

Blauwal

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Colombia, Ecuador). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Baltische Meerassel

The Baltic Isopod (Idotea balthica) is a species in the genus Idotea. Typically found in marine, freshwater, and terrestrial environments. Like other members of its genus, this species plays a role in its native ecosystem.

Blauwal

The largest animal ever known to have lived on Earth, blue whales can reach 33 meters and 200 tonnes — their hearts alone weigh as much as a small car. Found in all oceans, they migrate between polar feeding grounds and tropical breeding areas. Filter feeders consuming up to 4 tonnes of krill daily. Endangered, with global populations estimated at 10,000–25,000 after near-extinction from 20th-century whaling.

Shared Countries

Both species can be found in 4 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden