blue whale vs

Balaenoptera musculus compared with Stephanoeca kentii

Key Differences

  • blue whale is Vulnerable while is Not Evaluated.

Taxonomic Classification

Rank blue whale
Kingdom Animalia (動物) Protozoa (原生動物)
Phylum Chordata (脊索動物) Choanozoa (襟鞭毛虫門)
Class Mammalia (哺乳類) Choanoflagellatea (襟鞭毛虫綱)
Order Cetacea (Whales & Dolphins) Choanoflagellida (Choanoflagellida)
Family Balaenopteridae (Rorquals) Acanthoecidae
Genus Balaenoptera (Rorquals) Stephanoeca
Species Balaenoptera musculus Stephanoeca kentii

Conservation Status

blue whale

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

NE — Not Evaluated

Physical Characteristics

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

Habitat & Geographic Range

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.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

blue whale

地球上で生きたことが知られている最大の動物であるシロナガスクジラ(Balaenoptera musculus)は、体長33メートル、体重200トンに達することができ、心臓だけで小型自動車ほどの重さがあります。全ての海洋に生息し、極地の餌場と熱帯の繁殖地の間を回遊します。1日最大4トンのオキアミを摂取する濾過摂食者です。20世紀の捕鯨による絶滅危機からの回復後、世界的な個体数は10,000〜25,000頭と推定される絶滅危惧種です。

Stephanoeca kentiiはロリカを持つ襟鞭毛虫類で、細胞周囲にケイ酸塩片からなる精巧なかご状の構造物(ロリカ)を形成する海洋性単細胞生物です。ピコプランクトン細菌を餌とする沿岸・外洋域の海水に生息します。この種のような襟鞭毛虫類は、動物に最も近縁な現生単細胞生物として科学的関心を集めています。

Shared Countries

Both species can be found in 2 countries:

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