bignose shark vs Leatherback Sea Turtle

Carcharhinus altimus compared with Dermochelys coriacea

Key Differences

• bignose shark is Near Threatened while Leatherback Sea Turtle is Vulnerable.

Taxonomic Classification

Rank	bignose shark	Leatherback Sea Turtle
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Chondrichthyes (軟骨魚綱)	Reptilia (爬虫類)
Order	Carcharhiniformes (メジロザメ目)	Testudines (カメ)
Family	Carcharhinidae	Cheloniidae (Sea Turtles)
Genus	Carcharhinus	Chelonia (Green Sea Turtles)
Species	Carcharhinus altimus	Dermochelys coriacea

Evolutionary Relationship

bignose shark and Leatherback Sea Turtle share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

bignose shark

NT — Near Threatened

Leatherback Sea Turtle

VU — Vulnerable

Population: ~35.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	bignose shark	Leatherback Sea Turtle
Diet	—	Carnivore
Average Lifespan	—	50 years
Average Length	—	2.0 m
Average Weight	—	500.0 kg

Habitat & Geographic Range

bignose shark

Habitat

Found across multiple habitat types including deserts and xeric shrublands, temperate broadleaf and mixed forests, and temperate coniferous forests, among 6 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Algeria, Egypt, Taiwan, Turkey, and Venezuela. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Leatherback Sea Turtle

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

Range

Distributed across Costa Rica, Indonesia, Malaysia, and Trinidad and Tobago. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

bignose shark

The Bignose shark (Carcharhinus altimus) is a species in the genus Carcharhinus. It is currently classified as Near Threatened on the IUCN Red List. Found across multiple habitat types including deserts and xeric shrublands, temperate broadleaf and mixed forests, and temperate coniferous forests, among 6 distinct biome types within the Palearctic biogeographic realm. Populations are als

Leatherback Sea Turtle

オサガメは現存する最大のカメであり、爬虫類の中で4番目に重い種です。他のカメとは異なり、硬い甲羅ではなく柔らかく革のような皮膚に覆われています。