https://inaturalist.org Observation of the Day for May 11, 2026: Babosa marina verrugosa de Diguet [Mollusca], by user: tidechaser96
[via @inatrepostbot]
https://www.inaturalist.org/observations/359004710
Cihuatlán, MX-JA, MX
2026-05-03T12:09:00-06:00
Credit: (c) Héctor Alejandro Hernández Castellanos, all rights reserved
See more: https://www.inaturalist.org/projects/inat-observation-of-the-day
#inaturalist #inaturalistorg #citizenscience #babosamarinaverrugosadediguet #pleurobranchusdigueti #cihuatln #mxja #mx #mollusca #animals #molluscs #gastropods #heterobranchs #sidegilledseaslugs

6-May-2026
Turning #Camellia #shell #waste into a dual nutrient trap for #wastewater cleanup

https://www.eurekalert.org/news-releases/1127067

See also my recent feature about #oyster shells (magic link provides free access)

https://proseandpassion.blogspot.com/2026/05/all-about-oysters.html

#science #molluscs #recycling #ecology

Turning Camellia shell waste into a dual nutrient trap for wastewater cleanup

A research team has developed a calcium hydroxide-modified biochar made from discarded Camellia oleifera shells that can simultaneously capture ammonium and phosphate from water, two major drivers of eutrophication.

EurekAlert!
She sells sea shells on the sea shore. Apparently, the old tongue twister is still as relevant today as ever, having just learned that the smaller Truncate Donax below the cockle (if Google Lens is to be believed) can fetch between 2 and 4 USD!
These two were found cosying up to each other on Camber Sands beach at low tide.
#seashells
#bivalves
#molluscs
#cockles
#CamberSands

"The fan mussel Pinna nobilis, the largest bivalve endemic to the Mediterranean Sea, has experienced a near-total collapse since 2016 due to mass mortality events (MMEs) primarily caused by the protozoan parasite Haplosporidium pinnae. Now listed as Critically Endangered, the species is considered functionally extinct across most of its native range. However, recent surveys in the Thau Lagoon (southern France) revealed a large resilient population, with total abundance previously estimated at over 100,000 individuals. Within this population, exceptionally high densities were recorded along the Tocs sandbank system and the adjacent Quilles sector. Densities were quantified by freediving-based 100 m² belt transects (50 m × 2 m; n = 89) across 15 stations. Our study reports unprecedented densities, with a global mean of 78.6 ± 8.7 individuals/100 m² and a maximum of 511 individuals/100 m², surpassing previously reported values. Extrapolation within a conservative 180-ha core survey area yields a total abundance exceeding 1.4 million individuals."

#molluscs
@dantheclamman

https://www.nature.com/articles/s41598-026-48614-z

Surviving the collapse: unprecedented densities of the critically endangered fan mussel Pinna nobilis in a Mediterranean coastal lagoon - Scientific Reports

The fan mussel Pinna nobilis, the largest bivalve endemic to the Mediterranean Sea, has experienced a near-total collapse since 2016 due to mass mortality events (MMEs) primarily caused by the protozoan parasite Haplosporidium pinnae. Now listed as Critically Endangered, the species is considered functionally extinct across most of its native range. However, recent surveys in the Thau Lagoon (southern France) revealed a large resilient population, with total abundance previously estimated at over 100,000 individuals. Within this population, exceptionally high densities were recorded along the Tocs sandbank system and the adjacent Quilles sector. Densities were quantified by freediving-based 100 m² belt transects (50 m × 2 m; n = 89) across 15 stations. Our study reports unprecedented densities, with a global mean of 78.6 ± 8.7 individuals/100 m² and a maximum of 511 individuals/100 m², surpassing previously reported values. Extrapolation within a conservative 180-ha core survey area yields a total abundance exceeding 1.4 million individuals. Field observations indicate the presence of various life stages, from juveniles to large adults, suggesting ongoing recruitment and long-term survival. Together, these findings highlight the potential conservation importance of Thau lagoon as a refuge for P. nobilis and identify the Tocs-Quilles area as a major density hotspot within this lagoon refuge.

Nature

Sluggy friend says "Hi!"

(Western dusky slug, 𝘈𝘳𝘪𝘰𝘯 𝘧𝘶𝘴𝘤𝘶𝘴, from the Wiley trails)

#MolluscMonday #slug #gastropoda #molluscs #invertebrates

Roaring thunders as the #snails come out! #molluscs #invertebrates

They have a bizarre and somewhat brutal biological quirk. Because their anatomy is so large, they occasionally get "stuck" during mating. When this happens, one slug will actually chew off the other's phallus to separate. This is called apophallation. The "victim" then lives the rest of its life as a female (they are #hermaphrodites).

#photography
#molluscs
#BananaSlug
#apophallation

A banana slug navigates difficult terrain in Pacific Grove, California, US. It has a phallus that can stretch the entire length of its body (up to 15cm), and it emits a tongue-numbing mucous to deter predators.

Photograph: Rory Merry/Zuma Press Wire/Shutterstock

#photography
#molluscs
#BananaSlug