Coccolithophorid vs 瓶鼻海豚

Hymenomonas roseola compared with Tursiops truncatus

Key Differences

Coccolithophorid is Not Evaluated while 瓶鼻海豚 is Least Concern.

Taxonomic Classification

Rank	Coccolithophorid	瓶鼻海豚
Kingdom	Chromista (色藻界)	Animalia (动物界)
Phylum	Haptophyta (定鞭藻門)	Chordata (脊索动物门)
Class	Prymnesiophyceae (普林藻纲)	Mammalia (哺乳動物)
Order	Coccolithales (球石藻目)	Cetacea (Whales & Dolphins)
Family	Hymenomonadaceae	Delphinidae (Oceanic Dolphins)
Genus	Hymenomonas	Tursiops (Bottlenose Dolphins)
Species	Hymenomonas roseola	Tursiops truncatus

Conservation Status

Coccolithophorid

NE — Not Evaluated

瓶鼻海豚

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Physical Characteristics

Attribute	Coccolithophorid	瓶鼻海豚
Diet	—	Carnivore
Average Lifespan	—	45 years
Average Length	—	3.0 m
Average Weight	—	300.0 kg

Habitat & Geographic Range

Coccolithophorid

Habitat

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

Range

Distributed across Norway, Sweden, and United States.

瓶鼻海豚

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 12 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and South America (Colombia, Ecuador, Venezuela).

Coccolithophorid

Hymenomonas roseola is a marine coccolithophore in the class Prymnesiophyceae, belonging to the order Coccolithales—a group of single-celled phytoplankton celebrated for covering their cell surfaces with ornate calcium carbonate scales known as coccoliths. This species is notable for producing distinctive coccoliths with a characteristic architecture visible under electron microscopy. Like all coccolithophores, Hymenomonas roseola plays a significant role in oceanic biogeochemical cycles: the formation of calcium carbonate coccoliths drives the biological carbon pump by fixing inorganic carbon into mineral form, which sinks upon cell death to accumulate in deep-sea sediments. The species inhabits the photic zone of temperate to subtropical marine waters in the North Atlantic, Mediterranean, and Pacific regions, where it has been documented from coastal and open-ocean samples. As a photosynthetic organism, it requires sunlight for carbon fixation and typically blooms in stratified surface waters with adequate nutrients. Coccolithophore blooms can be so dense as to be visible from space as turquoise patches in satellite imagery. Hymenomonas species have also been noted for their ability to calcify in culture, making them useful laboratory models for studying coccolith biomineralization mechanisms and the potential impacts of ocean acidification, which threatens to dissolve calcium carbonate structures as seawater pH decreases. Its conservation status has not been formally evaluated.