VU

Berthella sideralis

Local name: gul fläcksnäcka

Unknown

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Berthella sideralis faces significant pressure from coastal development and pollution in its limited Mediterranean range. The species' shallow-water habitat makes it particularly vulnerable to marine pollution, including plastic debris and chemical runoff from coastal urbanization. Climate change-induced warming of Mediterranean waters may be altering the delicate ecological balance this nudibranch depends on for survival.

Threat summary

Habitat

This marine nudibranch inhabits shallow coastal waters of the Mediterranean Sea, typically found on rocky substrates and among algae in the subtidal zone. It prefers areas with good water circulation and abundant sponge growth, which forms part of its diet.

MARINE· major

Other threatened species in Pleurobranchidae

dubbelvingeVU

dubbelvinge

Pleurobranchus membranaceus

Unknown

Threatened in Norway

Calidris ferrugineaVU

Calidris ferruginea

Declining
VU

Syndyas nigripes

Unknown
Chrysotus cupreusCR

Chrysotus cupreus

Unknown
agnhodeedderkoppCR

agnhodeedderkopp

Walckenaeria alticeps

Unknown

Frequently asked questions

Why is gul fläcksnäcka classified as Vulnerable?
gul fläcksnäcka is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Berthella sideralis faces significant pressure from coastal development and pollution in its limited Mediterranean range. The species' shallow-water habitat makes it particularly vulnerable to marine pollution, including plastic debris and chemical runoff from coastal urbanization. Climate change-induced warming of Mediterranean waters may be altering the delicate ecological balance this nudibranch depends on for survival.
Where does gul fläcksnäcka live?
gul fläcksnäcka occurs in Norway, and Sweden. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to gul fläcksnäcka?
The main threats to gul fläcksnäcka are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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