Bigeye thresher vs Sea Lettuce

Alopias pelagicus compared with Ulva lactuca

Key Differences

• Bigeye thresher is Endangered while Sea Lettuce is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Sea Lettuce
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Chlorophyta (Chlorophyta)
Class	Chondrichthyes (Cartilaginous Fish)	Ulvophyceae (Ulvophyceae)
Order	Lamniformes (Mackerel Sharks)	Ulvales (Ulvales)
Family	Alopiidae	Ulvaceae
Genus	Alopias	Ulva
Species	Alopias pelagicus	Ulva lactuca

Conservation Status

Bigeye thresher

EN — Endangered

Sea Lettuce

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Sea Lettuce
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bigeye thresher

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Distributed across Colombia and Taiwan. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Sea Lettuce

Habitat

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

Range

Widely distributed across Asia (Lebanon, Taiwan, Turkey), Europe (4 countries), North America (Mexico), Oceania and the Pacific (New Zealand), and South America (Brazil).

Bigeye thresher

The Bigeye thresher (Alopias pelagicus) is a species in the genus Alopias. It is currently classified as Endangered on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Shared Countries

Both species can be found in 1 countries:

🇹🇼 Taiwan