Bladder Wrack vs Koala

Fucus vesiculosus compared with Phascolarctos cinereus

Key Differences

• Bladder Wrack is Least Concern while Koala is Vulnerable.

Taxonomic Classification

Rank	Bladder Wrack	Koala
Kingdom	Chromista (Chromista)	Animalia (Tier)
Phylum	Ochrophyta (Ochrophyta)	Chordata (Chordatiere)
Class	Phaeophyceae (Braunalgen)	Mammalia (Säugetiere)
Order	Fucales (Fucales)	Diprotodontia (Marsupials)
Family	Fucaceae	Phascolarctidae (Koalas)
Genus	Fucus	Phascolarctos (Koalas)
Species	Fucus vesiculosus	Phascolarctos cinereus

Conservation Status

Bladder Wrack

LC — Least Concern

Koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Bladder Wrack	Koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Bladder Wrack

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Found in Australia. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Bladder Wrack

The Bladder Wrack (Fucus vesiculosus) is a species in the genus Fucus. It is currently classified as Least Concern on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

Koala

Iconic marsupial of eastern and southeastern Australia, koalas weigh up to 15 kg and spend up to 22 hours daily sleeping to conserve energy from their low-calorie eucalyptus leaf diet. Highly specialized to process toxic eucalyptus compounds that would kill most other mammals, they have gut microbiomes uniquely adapted for detoxification. Listed as Endangered in 2022, with populations decimated by chlamydia disease, habitat clearing, and climate change.