Dark Stonewort vs Giant Otter

Nitella opaca compared with Pteronura brasiliensis

Key Differences

• Dark Stonewort is Least Concern while Giant Otter is Endangered.

Taxonomic Classification

Rank	Dark Stonewort	Giant Otter
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Charophyta (Charophyta)	Chordata (Chordates)
Class	Charophyceae (Charophyceae)	Mammalia (Mammals)
Order	Charales (Charales)	Carnivora (Carnivorans)
Family	Characeae	Mustelidae (Weasels & Otters)
Genus	Nitella	Pteronura
Species	Nitella opaca	Pteronura brasiliensis

Conservation Status

Dark Stonewort

LC — Least Concern

Giant Otter

EN — Endangered

Physical Characteristics

Attribute	Dark Stonewort	Giant Otter
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dark Stonewort

Habitat

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

Range

Distributed across Brazil, 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.