Brazier's Ear Shell vs common bottlenose dolphin

Haliotis brazieri compared with Tursiops truncatus

Key Differences

• Brazier's Ear Shell is Near Threatened while common bottlenose dolphin is Least Concern.

Taxonomic Classification

Rank	Brazier's Ear Shell	common bottlenose dolphin
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Mammalia (Mammals)
Order	Lepetellida (Lepetellida)	Cetacea (Whales & Dolphins)
Family	Haliotidae	Delphinidae (Oceanic Dolphins)
Genus	Haliotis	Tursiops (Bottlenose Dolphins)
Species	Haliotis brazieri	Tursiops truncatus

Evolutionary Relationship

Brazier's Ear Shell and common bottlenose dolphin share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brazier's Ear Shell

NT — Near Threatened

common bottlenose dolphin

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Physical Characteristics

Attribute	Brazier's Ear Shell	common bottlenose dolphin
Diet	—	Carnivore
Average Lifespan	—	45 years
Average Length	—	3.0 m
Average Weight	—	300.0 kg

Habitat & Geographic Range

Brazier's Ear Shell

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Found in Australia. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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).

Brazier's Ear Shell

The Brazier's Ear Shell (Haliotis brazieri) is a species in the genus Haliotis. It is currently classified as Near Threatened on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

common bottlenose dolphin

The most studied and recognized dolphin species, bottlenose dolphins inhabit warm and temperate oceans worldwide, from coastal shallows to the open sea. Highly intelligent with large brains relative to body size, they demonstrate self-recognition, complex communication, and social learning. They live in fluid fission-fusion societies and cooperate to herd fish. A keystone indicator species for marine ecosystem health.