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Mollusc Facts

@molluscfacts / molluscfacts.tumblr.com

A blog for everything mollusc and malacology related!
Feel free to send in any questions you have about molluscs, or if you have a suggestion for a post.
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This should be obvious in hindsight but octopuses do apparently use an ink cloud to blind and confuse *prey,* not just defensively against predators, which is so wonderfully terrifying from the food’s perspective. And then the way an octopus kills large prey is just entangling around them so tightly it just can’t be shaken off and can take its sweet time drilling a single hole into the prey, so it can inject venom. Almost all octopuses have venom.

There are some other creatures that do this too but these are octopus drill holes on these shells!

Snails in the genus Julia have a bivalved shell, like a clam!

Even though they have a clam like shell, with 2 sections, they are in fact snails (class Gastropoda). They are marine snails, found throughout the Ino-Pacific. There are 6 species which are various shades of green. Julia are tiny, only reaching a length of up to 6 mm long. They feed on algae, and incorporate the chloroplasts from the algae into their bodies. Some of the chloroplasts remain photosynthetic, and the snails are able to feed on the products of this photosynthesis. This process is called kleptoplasty.

Photos: Julia sp. from Australia  - profmollusc | Inaturalist cc; Julia exquisita from Reuinion Island - Alexandre LaPorte | Wikipedia cc

do you have any pictures or facts to share about sea slugs/nudibranchs?

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Imagine the sweet smell of watermelon candy… underwater???

🤔🍉🌊 Meet the lion’s mane nudibranch, a.k.a. melibe, a stegosaurus-shaped sea slug with a surprisingly sugary scent! While the fruity fragrance of this marvelous mollusk may be alluring to humans, it’s quite off-putting to potential predators, like sea stars and fish.

We don’t recommend trying to sniff while underwater, but you can find a bouquet of melibes—yes, that’s the collective noun, very spring-vibes—in the Aquarium’s Enchanted Kelp Forest, beneath the Kelp Canopy exhibit. They can also be spotted in kelp forests and eelgrass beds all the way from Alaska to Baja!

We’re shore that a nudibranch by any other name would smell as sweet! 👃

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Anonymous asked:

I saw you reblogged a moon sail, have you ever posted about their egg cases? I visited the beach one time in Washington during a super low ride and saw a lot of them and even a whole moon snail!! We didn't touch it but it was so darn cool.

no, but I HAVE talked about their murderous tendencies!

so if you live on the cascadian coast, you may have found shells with weirdly precise holes in them that look like they were bored by a rogue etsy seller with a dremmel:

well tldr, moon snail done it.

see, moon snails are predatory! they feed entirely on other snails and bivalves like clams, which they kill by rasping a hole through their shell with an extendible mouthpart called a radula that resembles an extendible chainsaw, then injecting it with a digestive enzyme and slurping up the resulting ex-animal soup.

the entire process takes about five days! talk about a way to go.

not bad for an animal that looks like a deflated bike tire under a croissant!

(maybe don't pick them up though)

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Slug and Velvetworms - Preorder Time!!

i´m doing a final run of preorders for these before retiring the printed designs and my old slug pattern alltogether.

  1. these guys are Big and Large
  2. weighted!
  3. either all the leg or no leg
  4. soft
  5. handmade by me
  6. could live in your home

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only a limited amount of preorder slots are available per color and they will close all together before friday the 27th!

adopt them in my shop - barksbog.squarespace.com

Anonymous asked:

How to sea slugs live in the sea if salt hurts slugs?

I'm glad you asked!

you see slugs, like sea slugs, have the same level of salt in their bodies as seawater has!

so these slugs, (these sea slugs) don't need to fear drying out when submerged in the sea- the salt in their bodies matches the amount of salt in the water, so no liquid needs to get moved around, you see.

so these slugs are free slugs and can go on living just fine in the sea!

have a smiling nudibranch.

(that said, there isn't a c t u a l l y all that much salt in seawater, so if you dropped a literal pile of salt onto a sea slug, it would suck out the slug's moisture and kill it exactly the same way as a land slug. bye for now!)

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It’s Nudi Tuesday, show me your nudes 🌊 🐌

Found this guy, the Blue Glaucus - Glaucus atlanticus, on a beach walk and put him back in the ocean

The Blue Glaucus is this striking blue color because their snack of choice is large, venomous prey, such as the Portuguese man o' war and the blue button jelly. They store their prey's stinging cells in their bodies to later use against predators

Description from You Tube:

The Shellfish Growers Climate Coalition has grown from just seven shellfish growers in partnership with The Nature Conservancy in 2017 to more than 220 shellfish industry representatives across 24 U.S. states and Canada today. We’re engaging policymakers at the local, state, and federal levels around climate action by sharing our own personal stories about the impacts climate change has brought to our lives and livelihoods. This Earth Day, we’re lifting our voices to help our customers, colleagues, and Members of Congress understand just what’s at stake if we don’t act now: the sustainability of our businesses, the long-term viability of the shellfish industry, and the future of our planet.