Polzeath Marine Conservation Group’s Latest Rockpool Survey

Polzeath Marine Conservation Group and Centre (PMCG) recently conducted their monthly Shoresearch survey, uncovering fascinating creatures in the rockpools that highlight the diversity and resilience of marine life.

During this expedition, volunteers from PMCG were delighted to find a variety of sea creatures, showcasing the intricate ecosystem that thrives in these tidal habitats. Among the notable findings was a moon snail (Naticidae) shell, which had been repurposed as a home by a hermit crab. Moon snails are remarkable for their ability to expand their fleshy foot by filling them with water and covering their large bulbous shell. This adaptation, coupled with their potential lifespan of up to 15 years, underscores the moon snail’s resilience in the marine environment.

Another significant discovery was a sea hare (Anaspidea), which appeared to be in very healthy condition and possibly pregnant. Sea hares, resembling sea slugs but distinguished by an internal shell, can grow up to 20 cm in length. Their presence in the rockpools indicates a healthy marine ecosystem, given their sensitivity to environmental changes.

The survey also uncovered a yellow-plumed sea slug (Berthella plumula) equipped with a unique defence mechanism. When threatened, this species secretes sulfuric acid from glands in its skin, providing a stark example of the diverse survival strategies evolved by marine species.

These findings not only excite marine enthusiasts but also serve as a reminder of the importance of conserving these habitats. The PMCG team’s efforts contribute to our understanding of marine biodiversity and the need to protect these ecosystems from threats.

As the group continues to explore and document the marine life in the rockpools, they also call on the public to appreciate and help preserve this incredible marine life. Their discoveries serve as a window into the complex and fascinating world beneath the waves, emphasising the beauty and fragility of our marine ecosystems.

Find out more about Polzeath Marine Conservation Group and Centre visit their website.