Blauwal vs Vierzahn-Röhrenwurm

Balaenoptera musculus compared with Spirobranchus tetraceros

Key Differences

• Blauwal is Vulnerable while Vierzahn-Röhrenwurm is Not Evaluated.

Taxonomic Classification

Rank	Blauwal	Vierzahn-Röhrenwurm
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum	Chordata (Chordatiere)	Annelida (Ringelwürmer)
Class	Mammalia (Säugetiere)	Polychaeta (Vielborster)
Order	Cetacea (Whales & Dolphins)	Sabellida (Sabellida)
Family	Balaenopteridae (Rorquals)	Serpulidae
Genus	Balaenoptera (Rorquals)	Spirobranchus
Species	Balaenoptera musculus	Spirobranchus tetraceros

Evolutionary Relationship

Blauwal and Vierzahn-Röhrenwurm share a common ancestor at the Kingdom level: Animalia. (Tier)

Conservation Status

Blauwal

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Vierzahn-Röhrenwurm

NE — Not Evaluated

Physical Characteristics

Attribute	Blauwal	Vierzahn-Röhrenwurm
Diet	Carnivore	—
Average Lifespan	90 years	—
Average Length	30.0 m	—
Average Weight	150.0 t	—

Habitat & Geographic Range

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.

Vierzahn-Röhrenwurm

Habitat

Native to Asia and Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Cyprus, Greece, Lebanon, Syria, and Turkey.

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.