common razor clam vs Common Seahorse

Ensis ensis compared with Hippocampus kuda

Key Differences

• common razor clam is Least Concern while Common Seahorse is Vulnerable.

Taxonomic Classification

Rank	common razor clam	Common Seahorse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Actinopterygii (Ray-finned Fish)
Order	Adapedonta (Adapedonta)	Perciformes (Perch-like Fish)
Family	Pharidae	Pomacentridae (Clownfish & Damselfish)
Genus	Ensis	Amphiprion (Clownfish)
Species	Ensis ensis	Hippocampus kuda

Evolutionary Relationship

common razor clam and Common Seahorse share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

common razor clam

LC — Least Concern

Common Seahorse

VU — Vulnerable

Trend: Decreasing ↓

Physical Characteristics

Attribute	common razor clam	Common Seahorse
Diet	—	Carnivore
Average Lifespan	—	5 years
Average Length	—	17 cm
Average Weight	—	10 g

Habitat & Geographic Range

common razor clam

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Common Seahorse

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 7 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Australia, India, Indonesia, Japan, and Philippines. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

common razor clam

<em>Ensis ensis</em>, the common razor clam, is a bivalve mollusk in the family Pharidae, order Adapedonta. It is distributed along the northeastern Atlantic coastline, with documented populations in Belgium, Denmark, Norway, and Sweden. The species is assessed as Least Concern by the IUCN, suggesting stable populations across much of its range. Common razor clams typically inhabit sandy intertidal and shallow subtidal zones, burrowing rapidly into sediment using their muscular foot to evade predators and avoid desiccation. Their elongated shell, resembling an old-fashioned straight razor, is a distinctive morphological feature of the genus Ensis. <em>Ensis ensis</em> is a suspension feeder, typically drawing in water and filtering phytoplankton and organic particles through its siphons. This feeding strategy makes it an important component of coastal benthic communities. Razor clams play an ecological role as both filter feeders improving water clarity and as prey items for shorebirds, flatfish, and marine mammals. Biological traits such as precise lifespan, body measurements, and diet composition vary across populations and remain incompletely characterized. The species is commercially harvested in parts of its range and is considered a minor fishery resource in Scandinavian waters.

Common Seahorse

The common seahorse is found in tropical and temperate waters. Males carry and deliver the babies.