Coelacanth vs common bottlenose dolphin

Latimeria chalumnae compared with Tursiops truncatus

Key Differences

• Coelacanth is Critically Endangered while common bottlenose dolphin is Least Concern.
• common bottlenose dolphin is 3.8x heavier than Coelacanth.
• Coelacanth lives longer (100 years vs 45 years).

Taxonomic Classification

Rank	Coelacanth	common bottlenose dolphin
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Coelacanthi (Coelacanthi)	Mammalia (哺乳類)
Order	Coelacanthiformes (シーラカンス)	Cetacea (Whales & Dolphins)
Family	Latimeriidae	Delphinidae (Oceanic Dolphins)
Genus	Latimeria	Tursiops (Bottlenose Dolphins)
Species	Latimeria chalumnae	Tursiops truncatus

Evolutionary Relationship

Coelacanth and common bottlenose dolphin share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Coelacanth

CR — Critically Endangered

Population: ~500

Trend: Decreasing ↓

common bottlenose dolphin

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Physical Characteristics

Attribute	Coelacanth	common bottlenose dolphin
Diet	Carnivore	Carnivore
Average Lifespan	100 years	45 years
Average Length	1.8 m	3.0 m
Average Weight	80.0 kg	300.0 kg

Habitat & Geographic Range

Coelacanth

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 8 distinct biome types spanning the Australasia and Afrotropic and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Comoros, Indonesia, Mozambique, and South Africa. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

common bottlenose dolphin

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 12 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and South America (Colombia, Ecuador, Venezuela).

Coelacanth

1938年に南アフリカ沖で再発見されるまで6,500万年間絶滅していたと考えられていた生きた化石であるシーラカンスは、2メートル、90kgに達することができます。この種は条鰭類よりも四足動物に近い古代の肉鰭類の系統に属しており、脊椎動物の進化を理解する上で科学的に非常に重要です。インド洋の深い岩礁生息地に生息し、夜行性で体内受精により完全に形成された幼魚を産みます。絶滅危惧IA類（CR）種です。

common bottlenose dolphin

最も研究され、最も知られているイルカ種であるバンドウイルカは、沿岸の浅瀬から外洋まで世界中の温暖な海域と温帯海域に生息します。体に対して大きな脳を持つ高度に知性的なこの種は、自己認識、複雑なコミュニケーション、社会的学習を示します。流動的な分裂融合社会で生活し、魚を追い込むために協力します。海洋生態系の健全性の重要な指標種です。