Baltic Isopod vs blue whale

Idotea balthica compared with Balaenoptera musculus

Key Differences

• Baltic Isopod is Not Evaluated while blue whale is Vulnerable.

Taxonomic Classification

Rank	Baltic Isopod	blue whale
Kingdom same	Animalia (प्राणी)	Animalia (प्राणी)
Phylum	Arthropoda (सन्धिपाद)	Chordata (रज्जुकी)
Class	Malacostraca (Crustaceans)	Mammalia (स्तनधारी)
Order	Isopoda (Isopoda)	Cetacea (Whales & Dolphins)
Family	Idoteidae	Balaenopteridae (Rorquals)
Genus	Idotea	Balaenoptera (Rorquals)
Species	Idotea balthica	Balaenoptera musculus

Evolutionary Relationship

Baltic Isopod and blue whale share a common ancestor at the Kingdom level: Animalia. (प्राणी)

Conservation Status

Baltic Isopod

NE — Not Evaluated

blue whale

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Baltic Isopod	blue whale
Diet	—	Carnivore
Average Lifespan	—	90 years
Average Length	—	30.0 m
Average Weight	—	150.0 t

Habitat & Geographic Range

Baltic Isopod

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

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

blue whale

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.

Baltic Isopod

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.

blue whale

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