Blue Dolphin vs sea thread hydroid

Stenella coeruleoalba compared with Obelia dichotoma

Key Differences

• Blue Dolphin is Least Concern while sea thread hydroid is Not Evaluated.

Taxonomic Classification

Rank	Blue Dolphin	sea thread hydroid
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Cnidaria (Cnidarians)
Class	Mammalia (Mammals)	Hydrozoa (Hydrozoa)
Order	Cetacea (Whales & Dolphins)	Leptothecata (Leptothecata)
Family	Delphinidae (Oceanic Dolphins)	Campanulariidae
Genus	Stenella	Obelia
Species	Stenella coeruleoalba	Obelia dichotoma

Evolutionary Relationship

Blue Dolphin and sea thread hydroid share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Blue Dolphin

LC — Least Concern

sea thread hydroid

NE — Not Evaluated

Physical Characteristics

Attribute	Blue Dolphin	sea thread hydroid
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).

sea thread hydroid

Habitat

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

Range

Widely distributed across Africa (South Africa), Europe (5 countries), North America (Canada, Mexico, United States), Oceania and the Pacific (Australia), and South America (Argentina, Chile).

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.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden