Indian Ocean humpback dolphin vs St. James' shell

Sousa plumbea compared with Pecten maximus

Key Differences

• Indian Ocean humpback dolphin is Endangered while St. James' shell is Least Concern.

Taxonomic Classification

Rank	Indian Ocean humpback dolphin	St. James' shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Bivalvia (Bivalvia)
Order	Cetacea (Whales & Dolphins)	Pectinida (Pectinida)
Family	Delphinidae (Oceanic Dolphins)	Pectinidae
Genus	Sousa	Pecten
Species	Sousa plumbea	Pecten maximus

Evolutionary Relationship

Indian Ocean humpback dolphin and St. James' shell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Indian Ocean humpback dolphin

EN — Endangered

St. James' shell

LC — Least Concern

Physical Characteristics

Attribute	Indian Ocean humpback dolphin	St. James' shell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Indian Ocean humpback dolphin

Habitat

Inhabits temperate broadleaf and mixed forests and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

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

St. James' shell

Habitat

Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (China), Europe (8 countries), and South America (Chile).

St. James' shell

St. James' shell (Pecten maximus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.