Buckelwal vs

Megaptera novaeangliae compared with Cocconeis scutellum

Key Differences

Buckelwal is Vulnerable while is Not Evaluated.

Taxonomic Classification

Rank	Buckelwal
Kingdom	Animalia (สัตว์)	Chromista (โครมิสตา)
Phylum	Chordata (สัตว์มีแกนสันหลัง)	Ochrophyta (Ochrophyta)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Bacillariophyceae (Bacillariophyceae)
Order	Cetacea (Whales & Dolphins)	Achnanthales (Achnanthales)
Family	Balaenopteridae (Rorquals)	Cocconeidaceae
Genus	Megaptera (Humpback Whales)	Cocconeis
Species	Megaptera novaeangliae	Cocconeis scutellum

Conservation Status

Buckelwal

VU — Vulnerable

Population: ~80.0K

Trend: Increasing ↑

NE — Not Evaluated

Physical Characteristics

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

Habitat & Geographic Range

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.

Habitat

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

Range

Distributed across Brazil, Norway, Portugal, Sweden, and Taiwan.

Buckelwal

Among the most acrobatic of the great whales, humpback whales are renowned for their complex, haunting songs sung by males during breeding season — some lasting hours and evolving over time. Reaching 16 meters and 30 tonnes, they undertake the longest migrations of any mammal. Found in all oceans, humpbacks feed on krill and small fish using cooperative bubble-net feeding. Populations have largely recovered from historic whaling.

Cocconeis scutellum is a marine and brackish-water diatom in the family Cocconeidaceae, one of the most commonly encountered epiphytic diatoms in coastal ecosystems worldwide. The frustule is broadly oval and relatively large for the genus, with robust silica walls bearing coarse transapical striae that give the valve a distinctive, shield-like appearance—a morphology reflected in the species epithet 'scutellum,' Latin for small shield. This species is a strict epiphyte in marine environments, attaching to the surfaces of seagrasses, macroalgae such as Ulva and Zostera, coralline algae, and other benthic substrates in shallow intertidal and subtidal zones. Cocconeis scutellum has been documented from coastal habitats across the Atlantic, Pacific, and Indian Oceans, with records from temperate and tropical regions including South America, Europe, and the Indo-Pacific, reflecting its cosmopolitan marine distribution. The species is a basal component of coastal food webs: dense epiphytic biofilms including C. scutellum are grazed by amphipods, gastropods, sea urchins, and small fish, transferring photosynthetically fixed carbon up the food chain. In estuarine environments where freshwater and saltwater mix, C. scutellum may co-occur with freshwater and brackish Cocconeis species, and salinity tolerance experiments indicate the species survives across a broad range of salinities. Its silicon frustules contribute to coastal sediment biosilica content upon cell death. Conservation status is not formally evaluated.