Aquatic oligochaete worm vs Ballena jorobada

Potamothrix bavaricus compared with Megaptera novaeangliae

Key Differences

• Aquatic oligochaete worm is Not Evaluated while Ballena jorobada is Vulnerable.

Taxonomic Classification

Rank	Aquatic oligochaete worm	Ballena jorobada
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Annelida (Segmented Worms)	Chordata (cordados)
Class	Clitellata (Clitellata)	Mammalia (mamíferos)
Order	Tubificida (Tubificida)	Cetacea (Whales & Dolphins)
Family	Naididae	Balaenopteridae (Rorquals)
Genus	Potamothrix	Megaptera (Humpback Whales)
Species	Potamothrix bavaricus	Megaptera novaeangliae

Evolutionary Relationship

Aquatic oligochaete worm and Ballena jorobada share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Aquatic oligochaete worm

NE — Not Evaluated

Ballena jorobada

VU — Vulnerable

Population: ~80.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Aquatic oligochaete worm	Ballena jorobada
Diet	—	Carnivore
Average Lifespan	—	50 years
Average Length	—	15.0 m
Average Weight	—	30.0 t

Habitat & Geographic Range

Aquatic oligochaete worm

Habitat

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

Range

Found across Europe (7 countries) and North America (United States).

Ballena jorobada

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 (5 countries), and South America (Colombia, Ecuador, Venezuela). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Aquatic oligochaete worm

The Aquatic oligochaete worm (Potamothrix bavaricus) is a species in the genus Potamothrix. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Ballena jorobada

Entre las ballenas grandes más acrobáticas, las ballenas jorobadas son célebres por sus complejos y estremecedores cantos entonados por los machos durante la temporada reproductiva, que pueden durar horas y evolucionar con el tiempo. Alcanzando 16 metros y 30 toneladas, realizan las migraciones más largas de cualquier mamífero. Se encuentran en todos los océanos y se alimentan de krill y peces pequeños mediante la técnica cooperativa de pesca con red de burbujas.

Shared Countries

Both species can be found in 2 countries:

🇩🇰 Denmark 🇸🇪 Sweden