Abyssal Skate vs Buckelwal

Bathyraja ishiharai compared with Megaptera novaeangliae

Key Differences

• Abyssal Skate is Data Deficient while Buckelwal is Vulnerable.

Taxonomic Classification

Rank	Abyssal Skate	Buckelwal
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Elasmobranchii	Mammalia (哺乳類)
Order	Rajiformes (ガンギエイ目)	Cetacea (Whales & Dolphins)
Family	Arhynchobatidae	Balaenopteridae (Rorquals)
Genus	Bathyraja	Megaptera (Humpback Whales)
Species	Bathyraja ishiharai	Megaptera novaeangliae

Evolutionary Relationship

Abyssal Skate and Buckelwal share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Abyssal Skate

DD — Data Deficient

Buckelwal

VU — Vulnerable

Population: ~80.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Abyssal Skate	Buckelwal
Diet	—	Carnivore
Average Lifespan	—	50 years
Average Length	—	15.0 m
Average Weight	—	30.0 t

Habitat & Geographic Range

Abyssal Skate

Buckelwal

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

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Abyssal Skate

The Abyssal Skate (Bathyraja ishiharai) is a species in the genus Bathyraja. It is classified as Data Deficient on the IUCN Red List. Data Deficient status indicates that available information is currently insufficient to assess the species' extinction risk.

Buckelwal

大型クジラの中で最も曲芸的なクジラのひとつであるザトウクジラは、繁殖期にオスが歌う複雑で神秘的な歌で知られており、数時間にわたって続き時間をかけて変化していきます。体長16m、体重30トンに達し、哺乳類の中で最長の回遊を行います。全海洋に分布し、協調的なバブルネット採餌でオキアミや小魚を捕食します。歴史的な捕鯨後の個体数はおおむね回復しています。