Indian Ocean humpback dolphin vs thick-lipped risso snail

Sousa plumbea compared with Rissoa membranacea

Key Differences

• Indian Ocean humpback dolphin is Endangered while thick-lipped risso snail is Least Concern.

Taxonomic Classification

Rank	Indian Ocean humpback dolphin	thick-lipped risso snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Gastropoda (Gastropoda)
Order	Cetacea (Whales & Dolphins)	Littorinimorpha (Littorinimorpha)
Family	Delphinidae (Oceanic Dolphins)	Rissoidae
Genus	Sousa	Rissoa
Species	Sousa plumbea	Rissoa membranacea

Evolutionary Relationship

Indian Ocean humpback dolphin and thick-lipped risso snail share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Indian Ocean humpback dolphin

EN — Endangered

thick-lipped risso snail

LC — Least Concern

Physical Characteristics

Attribute	Indian Ocean humpback dolphin	thick-lipped risso snail
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.

thick-lipped risso snail

Habitat

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

Range

Distributed across Denmark, Norway, and Sweden.