Ballena azul vs Northern Naiad

Balaenoptera musculus compared with Najas gracillima

Key Differences

Ballena azul is Vulnerable while Northern Naiad is Least Concern.

Taxonomic Classification

Rank	Ballena azul	Northern Naiad
Kingdom	Animalia (Animals)	Plantae (planta)
Phylum	Chordata (cordados)	Magnoliophyta (Flowering Plants)
Class	Mammalia (mamíferos)	Liliopsida (Monocots)
Order	Cetacea (Whales & Dolphins)	Alismatales (Alismatales)
Family	Balaenopteridae (Rorquals)	Hydrocharitaceae
Genus	Balaenoptera (Rorquals)	Najas
Species	Balaenoptera musculus	Najas gracillima

Conservation Status

Ballena azul

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Northern Naiad

LC — Least Concern

Physical Characteristics

Attribute	Ballena azul	Northern Naiad
Diet	Carnivore	—
Average Lifespan	90 years	—
Average Length	30.0 m	—
Average Weight	150.0 t	—

Habitat & Geographic Range

Ballena azul

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.

Northern Naiad

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and North America (Canada, United States).

Ballena azul

El animal más grande que se conoce haya vivido en la Tierra; las ballenas azules pueden alcanzar 33 metros y 200 toneladas — sus corazones solos pesan tanto como un automóvil pequeño. Se encuentran en todos los océanos y migran entre las zonas de alimentación polares y las áreas de reproducción tropicales. Son filtradoras que consumen hasta 4 toneladas de kril al día. En peligro de extinción, con poblaciones globales estimadas entre 10.000 y 25.000 tras casi extinguirse por la caza de ballenas en el siglo XX.