Blauwal vs Gewöhnlich-Kleefarn

Balaenoptera musculus compared with Marsilea quadrifolia

Key Differences

Blauwal is Vulnerable while Gewöhnlich-Kleefarn is Not Evaluated.

Taxonomic Classification

Rank	Blauwal	Gewöhnlich-Kleefarn
Kingdom	Animalia (Tier)	Plantae (Pflanzen)
Phylum	Chordata (Chordatiere)	Tracheophyta
Class	Mammalia (Säugetiere)	Polypodiopsida (Echte Farne)
Order	Cetacea (Whales & Dolphins)	Salviniales (Schwimmfarnartige)
Family	Balaenopteridae (Rorquals)	Marsileaceae
Genus	Balaenoptera (Rorquals)	Marsilea
Species	Balaenoptera musculus	Marsilea quadrifolia

Conservation Status

Blauwal

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Gewöhnlich-Kleefarn

NE — Not Evaluated

Physical Characteristics

Attribute	Blauwal	Gewöhnlich-Kleefarn
Diet	Carnivore	—
Average Lifespan	90 years	—
Average Length	30.0 m	—
Average Weight	150.0 t	—

Habitat & Geographic Range

Blauwal

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 (4 countries), and South America (Colombia, Ecuador). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Gewöhnlich-Kleefarn

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Widely distributed across Asia (India, Vietnam), Europe (5 countries), and North America (Canada, United States).

Blauwal

The largest animal ever known to have lived on Earth, blue whales can reach 33 meters and 200 tonnes — their hearts alone weigh as much as a small car. Found in all oceans, they migrate between polar feeding grounds and tropical breeding areas. Filter feeders consuming up to 4 tonnes of krill daily. Endangered, with global populations estimated at 10,000–25,000 after near-extinction from 20th-century whaling.

Gewöhnlich-Kleefarn

<em>Marsilea quadrifolia</em>, commonly known as the common water clover or European waterclover, is an aquatic fern in the family Marsileaceae. Its conservation status is listed as Not Evaluated by the IUCN. The species has a broad native distribution spanning Asia and Europe, and has been introduced to North America, where it now occurs in scattered freshwater habitats. It typically grows in shallow ponds, rice paddies, slow-moving streams, and muddy lake margins, rooting in soft sediments while its four-leaflet fronds float on or emerge above the water surface. The distinctive four-lobed leaves strongly resemble a four-leaf clover, lending the plant its common name. <em>Marsilea quadrifolia</em> is a heterosporous fern, producing specialized reproductive structures called sporocarps that contain both megaspores and microspores, allowing reproduction under conditions unfavorable for vegetative growth. The plant is remarkably drought-tolerant, as sporocarps can remain viable for decades. It typically spreads through both vegetative rhizome growth and spore dispersal. Biological traits including average lifespan, height, and mass remain poorly documented in standardized databases. The species plays a role in shallow aquatic ecosystems as a colonizing plant, stabilizing soft substrates and providing microhabitat for invertebrates and small vertebrates in the temperate freshwater zones it inhabits.