Blue Dolphin vs

Stenella coeruleoalba compared with Chrysosphaerella coronacircumspina

Key Differences

Blue Dolphin is Least Concern while is Not Evaluated.

Taxonomic Classification

Rank	Blue Dolphin
Kingdom	Animalia (động vật)	Chromista (Chromista)
Phylum	Chordata (động vật có dây sống)	Ochrophyta (Ochrophyta)
Class	Mammalia (lớp Thú)	Chrysophyceae (Chrysophyceae)
Order	Cetacea (Whales & Dolphins)	Ochromonadales (Ochromonadales)
Family	Delphinidae (Oceanic Dolphins)	Paraphysomonadaceae
Genus	Stenella	Chrysosphaerella
Species	Stenella coeruleoalba	Chrysosphaerella coronacircumspina

Conservation Status

Blue Dolphin

LC — Least Concern

NE — Not Evaluated

Physical Characteristics

Attribute	Blue Dolphin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blue Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela).

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

Blue Dolphin

Blue Dolphin (Stenella coeruleoalba) 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.

Chrysosphaerella coronacircumspina is a colonial chrysophyte alga in the genus Chrysosphaerella, family Chromulinaceae. Its compound specific epithet corona-circumspina (Latin: crown of surrounding spines) references the distinctive arrangement of silica spines forming a ring or crown around each cell in the colony. Each cell in a Chrysosphaerella colony bears both flat siliceous scales and long, projecting spines, with the spine arrangement being species-specific and taxonomically diagnostic. The colonial organization is held together by organic matrix material, creating a spherical or semi-spherical aggregate visible under light microscopy. C. coronacircumspina is found in freshwater phytoplankton communities in Scandinavia, consistent with the broader distribution of Chrysosphaerella in cold-temperate and subarctic lakes. The silica structures produced by Chrysosphaerella cells are deposited in lake sediments upon cell death, creating millennial-scale paleoenvironmental archives. Chrysophytes are sensitive to lake acidification, nutrients, and temperature, making them useful climate proxies in paleolimnological research. The species has not been assessed for conservation status by the IUCN and is listed as Not Evaluated.