Atlantic Bluefin Tuna vs Buckelwal

Thunnus thynnus compared with Megaptera novaeangliae

Key Differences

Atlantic Bluefin Tuna is Least Concern while Buckelwal is Vulnerable.
Buckelwal is 120.0x heavier than Atlantic Bluefin Tuna.
Buckelwal lives longer (50 years vs 40 years).

Taxonomic Classification

Rank	Atlantic Bluefin Tuna	Buckelwal
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Actinopterygii (Ray-finned Fish)	Mammalia (哺乳類)
Order	Perciformes (ペルカ目)	Cetacea (Whales & Dolphins)
Family	Scombridae (Tunas & Mackerels)	Balaenopteridae (Rorquals)
Genus	Thunnus (Tunas)	Megaptera (Humpback Whales)
Species	Thunnus thynnus	Megaptera novaeangliae

Evolutionary Relationship

Atlantic Bluefin Tuna and Buckelwal share a common ancestor at the Phylum level: Chordata. (脊索動物)

表示 Phylum: Chordata

Conservation Status

Atlantic Bluefin Tuna

LC — Least Concern

Trend: Increasing ↑

Buckelwal

VU — Vulnerable

Population: ~80.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Atlantic Bluefin Tuna	Buckelwal
Diet	Carnivore	Carnivore
Average Lifespan	40 years	50 years
Average Length	2.5 m	15.0 m
Average Weight	250.0 kg	30.0 t

Habitat & Geographic Range

Atlantic Bluefin Tuna

Habitat

Found across multiple habitat types including temperate coniferous forests, montane grasslands and shrublands, and Mediterranean forests and woodlands within the Palearctic biogeographic realm.

Range

Distributed across Italy, Japan, Morocco, Spain, and United States.

Buckelwal

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.

Atlantic Bluefin Tuna

大西洋クロマグロ（Thunnus thynnus）は大西洋・地中海に生息する世界最大のマグロ類の一種で、体長3メートル・体重700キログラム以上に達する個体が知られる。IUCNレッドリストでは絶滅危惧（EN）に分類されており、寿司・刺身用として極めて高い市場価値を持ち、1尾が3億円以上で取引された事例もある。体温調節能力と高速遊泳能力（時速70キロ以上）を持つ、硬骨魚類の中でも異例の生理的能力を備えた種である。

Buckelwal

大型クジラの中で最も曲芸的なクジラのひとつであるザトウクジラは、繁殖期にオスが歌う複雑で神秘的な歌で知られており、数時間にわたって続き時間をかけて変化していきます。体長16m、体重30トンに達し、哺乳類の中で最長の回遊を行います。全海洋に分布し、協調的なバブルネット採餌でオキアミや小魚を捕食します。歴史的な捕鯨後の個体数はおおむね回復しています。