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#molluscs

2 Beiträge2 Beteiligte0 Beiträge heute
Antwortete Jon Sullivan

#BiologicalInvasions expert Prof. Franz Essl from Austria gave a seminar today at #LincolnUniversityNZ. He showed a study of the global distribution of slugs and snails. Natives show distinct biogeographic regions. Australasian snails were different from African snails which were different from South American snails. Yet, naturalised snails (moved around the world by people) were just temperate and tropical. We are dramatically simplifying the natural world by moving species about. #molluscs

@marramgrass @DJDarren

You have a nose as well.

These speakers are designed to get right up it.

Whereas the Chinesium ones only do both ears and one nostril, which will not have that fully shafted audiophile feel.

One has to look out for these cheap cost-cutting tricks, otherwise one might end up with a plain old chamberless snail shell and not a nautilus at all, from a less reputable manufacturer.

@mads The animal that most blew my mind when I found out about it was the sea swallow.

I'm not sure how I'd not heard about these before.

Just look at it!

They float upside-down under the surface of the open ocean, scooting about looking for food. They eat things like Portuguese man o' war and steal the stinging nematocysts to use for their own defense.

And, they're just crazy-levels of elegant.

inaturalist.org/observations/2

iNaturalistSea Swallow (Glaucus atlanticus)Sea Swallow from Henderson Bay on February 11, 2016 by tangatawhenua. Is it a fish? Is it a slug? Is it a fishy anemone? I do not have a clue what this is! It is ab...

Shells - leave them by the shore

"This summer, please leave the sea shells by the seashore. Someone needs that shell more than you. For native wildlife, both occupied and unoccupied shells provide important shelter and sources of calcium and grit."

"If you absolutely must pick something up and take it home, please pick up some of the vast amount of plastic found on Australian beaches."
>>
theconversation.com/this-summe
#shells #seashells #collecting #beach #ecosystems #tourism #hoarding #BeachCombing #marine #wildlife #habitat #MarineParks #molluscs #shellfish #plastic #waste #TakeAway #HolidaySeason

What a #mollusc shell and fiber optic cables have in common npr.org/2024/11/23/nx-s1-51996

Heart cockle shells transmit sunlight to photosymbiotic algae using bundled fiber optic cables and condensing lenses: Dakota McCoy et al. nature.com/articles/s41467-024

"the structure of the #HeartCockle's shell operates as its own kind of fiber #OpticCables to channel light to the #algae living inside it"

@alcootatooter no no no that was superhelpful ☺️ I really had no idea those #oceans creatures exist!! When I sat down after visiting the beach looking at those pretty tiny pieces, they were all around the washed up lobsters, and googling the images did not return anything, so I made an assumption and am very happy to learn what they actually are!! ☺️ Now I will look out for the whole #mollusc :D they washed up on the beach with a flood of bluebottles, and seeing these #marine #molluscs are from QLD I guess the warmer water might have brought them along...