Gharial vs Polar bear

Gavialis gangeticus compared with Ursus maritimus

Key Differences

Gharial is Critically Endangered while Polar bear is Vulnerable.
Polar bear is 2.2x heavier than Gharial.
Gharial lives longer (60 years vs 25 years).

Taxonomic Classification

Rank	Gharial	Polar bear
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Reptilia (爬虫類)	Mammalia (哺乳類)
Order	Crocodylia (Crocodilians)	Carnivora (ネコ目)
Family	Crocodylidae (Crocodiles)	Ursidae (Bears)
Genus	Crocodylus (True Crocodiles)	Ursus (Bears)
Species	Gavialis gangeticus	Ursus maritimus

Evolutionary Relationship

Gharial and Polar bear share a common ancestor at the Phylum level: Chordata. (脊索動物)

表示 Phylum: Chordata

Conservation Status

Gharial

CR — Critically Endangered

Population: ~650

Trend: Increasing ↑

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Gharial	Polar bear
Diet	Carnivore	Carnivore
Average Lifespan	60 years	25 years
Average Length	5.0 m	2.4 m
Average Weight	200.0 kg	450.0 kg

Habitat & Geographic Range

Gharial

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical coniferous forests, and temperate broadleaf and mixed forests, among 6 distinct biome types spanning the Indomalayan and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across India and Nepal. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Polar bear

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Gharial

ガビアル（Gavialis gangeticus）は非常に長く細い吻を持つ魚食性のワニ目動物である。成体が700頭未満の深刻な絶滅危惧種である。

Polar bear

地球上で最大の陸上肉食動物であるホッキョクグマは700kgを超えることがあり、カナダからロシアまでの北極海氷域全体に分布する。ワモンアザラシとヒゲアザラシを狩るために海氷に依存する高度に特化した海洋哺乳類である。広大な距離を泳ぐことができる優れた泳者でもある。脆弱種に指定されており、気候変動による急激な北極海氷の消失で個体群が深刻な圧力を受けている。