Chalky Macoma vs Giant Otter

Macoma calcarea compared with Pteronura brasiliensis

Key Differences

• Chalky Macoma is Least Concern while Giant Otter is Endangered.

Taxonomic Classification

Rank	Chalky Macoma	Giant Otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Mammalia (Mammals)
Order	Cardiida (Cardiida)	Carnivora (Carnivorans)
Family	Tellinidae	Mustelidae (Weasels & Otters)
Genus	Macoma	Pteronura
Species	Macoma calcarea	Pteronura brasiliensis

Evolutionary Relationship

Chalky Macoma and Giant Otter share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Chalky Macoma

LC — Least Concern

Giant Otter

EN — Endangered

Physical Characteristics

Attribute	Chalky Macoma	Giant Otter
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chalky Macoma

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

Giant Otter

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

Chalky Macoma

The Chalky Macoma (Macoma calcarea) is a species in the genus Macoma. It is currently classified as Least Concern on the IUCN Red List. Native to Europe and North America, inhabiting ecosystems characteristic of the region.