Big eye thresher shark vs Dusky Dolphin

Alopias superciliosus compared with Lagenorhynchus obscurus

Key Differences

• Big eye thresher shark is Vulnerable while Dusky Dolphin is Least Concern.

Taxonomic Classification

Rank	Big eye thresher shark	Dusky Dolphin
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Mammalia (Mammals)
Order	Lamniformes (Mackerel Sharks)	Cetacea (Whales & Dolphins)
Family	Alopiidae	Delphinidae (Oceanic Dolphins)
Genus	Alopias	Lagenorhynchus
Species	Alopias superciliosus	Lagenorhynchus obscurus

Evolutionary Relationship

Big eye thresher shark and Dusky Dolphin share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Big eye thresher shark

VU — Vulnerable

Dusky Dolphin

LC — Least Concern

Physical Characteristics

Attribute	Big eye thresher shark	Dusky Dolphin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big eye thresher shark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Distributed across Chile, Colombia, Portugal, Taiwan, and Venezuela. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Dusky Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Big eye thresher shark

The Big eye thresher shark (Alopias superciliosus) is a species in the genus Alopias. It is currently classified as Vulnerable on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.