Centric diatom vs Gray/Purple Heron

Skeletonema subsalsum compared with Ardea cinerea

Key Differences

• Centric diatom is Not Evaluated while Gray/Purple Heron is Least Concern.

Taxonomic Classification

Rank	Centric diatom	Gray/Purple Heron
Kingdom	Chromista (Chromista)	Animalia (Animals)
Phylum	Ochrophyta (Ochrophyta)	Chordata (Chordates)
Class	Bacillariophyceae (Bacillariophyceae)	Aves (Birds)
Order	Thalassiosirales (Thalassiosirales)	Pelecaniformes (Pelecaniformes)
Family	Skeletonemaceae	Ardeidae
Genus	Skeletonema	Ardea
Species	Skeletonema subsalsum	Ardea cinerea

Conservation Status

Centric diatom

NE — Not Evaluated

Gray/Purple Heron

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	Centric diatom	Gray/Purple Heron
Diet	—	Carnivore
Average Lifespan	—	15 years
Average Length	—	95 cm
Average Weight	—	1.5 kg

Habitat & Geographic Range

Centric diatom

Habitat

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

Range

Found across Europe (7 countries) and North America (United States).

Gray/Purple Heron

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries).

Centric diatom

The Centric Diatom (Skeletonema subsalsum) is a species in the genus Skeletonema. Found across Europe (7 countries) and North America (United States).

Gray/Purple Heron

A large, elegant wading bird reaching up to 1 meter in height, gray herons inhabit wetlands, rivers, lakes, and coastal areas across Europe, Asia, and Africa. Patient, solitary hunters, they stand motionless for long periods before striking fish, frogs, and small mammals with lightning-fast dagger bill strikes. They nest colonially in tall trees in rookeries called heronries, sometimes shared with other colonial waterbirds. Widely distributed and of Least Concern globally.

Shared Countries

Both species can be found in 4 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇷🇺 Russia 🇸🇪 Sweden