this post was submitted on 24 Nov 2025
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Chapotraphouse

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Blue-ringed octopuses, comprising the genus Hapalochlaena, are four extremely venomous species of octopus that are found in tide pools and coral reefs in the Pacific and Indian Oceans, from Japan to Australia. They can be identified by their yellowish skin and characteristic blue and black rings that can change color dramatically when the animals are threatened. They eat small crustaceans, including crabs, hermit crabs, shrimp, and other small sea animals.

They are some of the world's most venomous marine animals. Despite their small size—12 to 20 cm (5 to 8 in)—and relatively docile nature, they are very dangerous if provoked when handled because their venom contains a powerful neurotoxin called tetrodotoxin.

The species tends to have a lifespan around two to three years, which may vary depending on factors such as nutrition, temperature, and the intensity of light within its environment.

Behavior

Blue-ringed octopuses spend most of their time hiding in crevices while displaying effective camouflage patterns with their dermal chromatophore cells. Like all octopuses, they can change shape easily, which allows them to squeeze into small crevices. This, along with piling up rocks outside the entrance to their lairs, helps safeguard them from predators.

If they are provoked, they quickly change color, becoming bright yellow with each of the 50–60 rings flashing bright iridescent blue within a third of a second, as an aposematic warning display. In the greater blue-ringed octopus (H. lunulata), the rings contain multilayer light reflectors called iridophores. These are arranged to reflect blue–green light in a wide viewing direction. Beneath and around each ring are dark-pigmented chromatophores that can be expanded within one second to enhance the contrast of the rings. No chromatophores are above the ring, which is unusual for cephalopods, as they typically use chromatophores to cover or spectrally modify iridescence. The fast flashes of the blue rings are achieved using muscles that are under neural control. Under normal circumstances, each ring is hidden by contraction of muscles above the iridophores. When these relax and muscles outside the ring contract, the iridescence is exposed, thereby revealing the blue color.

Toxicity

The blue-ringed octopus, despite its small size, carries enough venom to kill 26 adult humans within minutes. Their bites are tiny and often painless, with many victims not realizing they have been envenomated until respiratory depression and paralysis begins. No blue-ringed octopus antivenom is available

The octopus produces venom containing tetrodotoxin, histamine, tryptamine, octopamine, taurine, acetylcholine, and dopamine. The venom can result in nausea, respiratory arrest, heart failure, severe and sometimes total paralysis, and blindness, and can lead to death within minutes if not treated. Death is usually caused by suffocation due to paralysis of the diaphragm.

Direct contact is necessary to be envenomated. Faced with danger, the octopus's first instinct is to flee. If the threat persists, the octopus goes into a defensive stance, and displays its blue rings. If the octopus is cornered and touched, it may bite and envenomate its attacker.

Conservation

Currently, the blue-ringed octopus population information is listed as least concern according to the International Union for Conservation of Nature. Threats such as bioprospecting, habitat fragmentation, degradation, overfishing, and human disturbance, as well as species collections for aquarium trade, though, may be threats to population numbers. Hapalochlaena possibly contributes to a variety of advantages to marine conservation. This genus of octopus provides stability of habitat biodiversity, as well as expanding the balance of marine food webs.

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[–] thelastaxolotl@hexbear.net 9 points 2 days ago
[–] LeylaLove@hexbear.net 4 points 35 minutes ago* (last edited 11 minutes ago)

Got a fellow Hexbear coming to my zoom AA meeting with me and I'm so happy!

If anybody wants to join us, PM me. It's alcoholics anonymous but we're cool with you sharing about any substance abuse issues. We're also talking about adding a meeting where we allow people with behavioral addictions to join us, but that's not concrete yet.

I will also add that this is still a 12 step meeting, so no getting political in meetings, but the meeting secretary is a self proclaimed tankie so our definition of political is a lot more flexible than most meetings.

[–] CrispyFern@hexbear.net 3 points 1 hour ago

If an elf ever gives you shit about how short your lifespan is, ask them how long it took them to learn how to read.

[–] Edie@hexbear.net 5 points 1 hour ago* (last edited 56 minutes ago) (1 children)

Thank you all for being decent. Also I'm happy we don't federate with reddit.world lemmitor and such instances.


ⓘ 𝘛𝘩𝘪𝘴 𝘶𝘴𝘦𝘳 𝘪𝘴 𝘴𝘶𝘴𝘱𝘦𝘤𝘵𝘦𝘥 𝘰𝘧 𝘣𝘦𝘪𝘯𝘨 𝘢 𝘤𝘢𝘵. 𝘗𝘭𝘦𝘢𝘴𝘦 𝘳𝘦𝘱𝘰𝘳𝘵 𝘢𝘯𝘺 𝘴𝘶𝘴𝘱𝘪𝘤𝘪𝘰𝘶𝘴 𝘣𝘦𝘩𝘢𝘷𝘪𝘰𝘳.

[–] LeninWeave@hexbear.net 3 points 1 hour ago (1 children)

Kind of scared to ask what prompted this comment. scared

[–] Edie@hexbear.net 3 points 58 minutes ago* (last edited 49 minutes ago) (2 children)

I subject myself to the wider fediverse sometimes by opening up Lemmy.ml/u/cowbee and sometimes its bad

slopReddit.world moment


ⓘ 𝘛𝘩𝘪𝘴 𝘶𝘴𝘦𝘳 𝘪𝘴 𝘴𝘶𝘴𝘱𝘦𝘤𝘵𝘦𝘥 𝘰𝘧 𝘣𝘦𝘪𝘯𝘨 𝘢 𝘤𝘢𝘵. 𝘗𝘭𝘦𝘢𝘴𝘦 𝘳𝘦𝘱𝘰𝘳𝘵 𝘢𝘯𝘺 𝘴𝘶𝘴𝘱𝘪𝘤𝘪𝘰𝘶𝘴 𝘣𝘦𝘩𝘢𝘷𝘪𝘰𝘳.

[–] LeninWeave@hexbear.net 3 points 45 minutes ago

lmao what the fuck??? monke-beepboop

[–] LeninWeave@hexbear.net 3 points 28 minutes ago* (last edited 24 minutes ago)

Slurs are socially constructed; opposing its use affirms its existence.

If you're white and you say the N-word, you are not affirming the existence of the N-word as a slur. very-smart

[–] LeninWeave@hexbear.net 5 points 1 hour ago* (last edited 1 hour ago)

When my wife wouldn't stop listening to a loud and looped version of the Reba TV show opening, Hexbear was there for me.

When my wife covered me in honey while I slept and then laughed as I struggled to get out of my cocooned state, Hexbear was there to call me misogynist at first, but after I explained myself most of the people who laughed at me got banned.

When I asked for $50 on here to get food delivered because I was too tired to cook after I had to spend 2 horus inchworming my way to the bath tub and arduously turn on the hot water tap with my face to dissolve the honey-infused bedsheet straitjacket I was trapped in, I got it. Hexbear has my back.

Another Hexbear home page refresh, another banger.

[–] WhyEssEff@hexbear.net 2 points 23 minutes ago* (last edited 17 minutes ago) (1 children)

It has been less than half a year since Deltarune Chapter 3&4 and its fanbase is currently experiencing a mass apophenia event where they are teetering on the irony tightrope woven with random tweets prior to 2015 where accounts utter key phrases over the pits of "Toby Fox had a vision from God to make Deltarune or time travelers are specifically fucking with Deltarune fans in its nascent era" if they tumble port, "Toby Fox had conceived of Deltarune so thoroughly and immediately that he made a bunch of random accounts in 2011-2013 as an ARG" starboard.

[–] WhyEssEff@hexbear.net 1 points 18 minutes ago* (last edited 13 minutes ago)

I am sorry gamers but I must inform you that people are actually named Dess and Noelle and Kris and Susie and sometimes things correlate because when there are eight billion people in the world a lot of experiences happen all the time and sometimes these things also happen in the twelfth month of the year and also your developer is extremely referential in his writing so sometimes people are talking about other games that he referenced in ambiguous enough terminology that it aligns with the game made which references the past game

[–] ClathrateG@hexbear.net 4 points 2 hours ago* (last edited 2 hours ago)

Phoenix, Arizona get the heat up on ya

I should warn ya the hexbears as fine as California

[–] ClathrateG@hexbear.net 4 points 3 hours ago
[–] jjsandwich8@hexbear.net 7 points 5 hours ago

Managed to get a tofurky roast today. I'm very happy I don't have to make one myself tomorrow, yay!

[–] MiraculousMM@hexbear.net 9 points 5 hours ago

I clicked on an article form one of those "games journalism" sites because it mentioned a "Mass Effect like" game that's free for a limited time and who doesn't love free shit?

The game in question was Star Citizen agony-shivering michael-laugh

[–] Moss@hexbear.net 15 points 7 hours ago (2 children)

One of my friends drunkenly asked me if communists are allowed to have hobbies and I genuinely don't know if she was joking.

As a side note, ever since it became known to my friends that I'm a communist, basically all of them have warmed up to communism. I don't think I have a single friend who would say they like capitalism and one of them, who is very well studied, has been saying that he "likes communism". Honestly I think it's just having a visible communist in their life let's them consider the possibility of being opposed to capitalism. I hate arguing so it's not like I'm doing much to convince them

[–] MiraculousMM@hexbear.net 5 points 5 hours ago

I hate arguing so it's not like I'm doing much to convince them

I feel this so much, I generally don't have the energy to get into the mud with people especially when there's so much propaganda to break through. Setting a good example as an open communist is probably more effective anyway and it sounds like its working for you!

[–] decaptcha@hexbear.net 5 points 6 hours ago

Good job being that person for your friend group... I can relate. It helps having the power of the immortal science on our side to explain current political events, that's won me a lot of credibility

[–] Big_Bob@hexbear.net 6 points 6 hours ago (2 children)

Man, I love bullying g*mers.

I just posted in my local subreddit that if you're over 30 and still playing video games, you need to take a hard look in the mirror.

I've been bombarded all day with triggered manchildren trying to convince me that, "uuuhhm akshually, being middle aged and having nothing to do in my life besides consuming vidya slop is healthy behaviour akshually."

Lmao

[–] Keld@hexbear.net 4 points 2 hours ago

you seem like the dick in this situation

[–] Hermes@hexbear.net 6 points 3 hours ago

No everything has to be serious at all times and we cannot find any humor in the absurdity of hell world. The last time I smiled was on August 19th, 1991. I wear a dirty ushanka at all times, do not shave, and only take cold sponge baths because hot running water is bourgeoisie decadence. Every day at exactly noon I have the same meal of an expired Maoist MRE I store in a pit covered in old issues of a revolutionary newspaper. I sleep in a bed made of flags from every failed revolution so that they are never forgotten. In the evenings I stare at a picture of vodka by candlelight, but I do not allow myself to drink because there is nothing to celebrate.

[–] Veggie_Deluxe@hexbear.net 6 points 6 hours ago* (last edited 6 hours ago)

i looked at one sign and read, 5pc for $9 and i thought, damn is this shit for real, then i saw the other sign and nah nothing is real anymore, the chucky cheese horror parody that an oddly large number of people wat to fuck for some reason, is part of a fried chicken deal from a nawleans themed fast food joint. all of this shit is nonsense and i wanna wake up

garlic parm tenders though.......。。。

[–] Wmill@hexbear.net 8 points 9 hours ago

It's kinda saddening seeing abandoned houses or stores around town, the stores in particular are mostly pharmacies so they still got the power on most likely the AC/heat too to prevent moisture build up and rot. Homes are just boarded up left to rot, fuck me rotten society.

[–] LeeeroooyJeeenkiiins@hexbear.net 6 points 9 hours ago (1 children)

how does growing onions work? Like, how do they make more of the bulb? Does it bud out? I assume it's not some like rhizomatic spread thing

just wondering because I looked up a bunch of videos and pics and I didn't see anything clearly indicating that. Do I just get "more onions" because I'm splitting these in half, so at the end of it each sprout will grow into one onion?

[–] NephewAlphaBravo@hexbear.net 6 points 9 hours ago* (last edited 8 hours ago) (1 children)

they don't have rhizomes yeah, if you're starting from a bulb you just get the one plant for that season, but onions do eventually flower and spread seeds

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[–] WhyEssEff@hexbear.net 7 points 9 hours ago (2 children)

Hunkering down and listening to Capital on audiobook now that I set up a Tailscale mesh to circumvent CGNAT tomfoolery and can serve my Jellyfin to my phone on the road

[–] into_highest_invite@lemmygrad.ml 3 points 2 hours ago (2 children)

do you have to pay for the mobile app or something? i'm on wireguard and i can't remember why i never went to tailscale

[–] WhyEssEff@hexbear.net 2 points 8 minutes ago (1 children)

you can have up to 3 accounts (emails) on it with idk how many devices, at least four thus far probably more, for free

[–] into_highest_invite@lemmygrad.ml 2 points 3 minutes ago

that's good to hear. i might have to look into it again. maybe i just didn't do it because i'm a little bit stallmanpilled

[–] hello_hello@hexbear.net 3 points 1 hour ago (1 children)

You don't have to pay for individual use. But if you already have a wireguard setup you don't need it.

[–] into_highest_invite@lemmygrad.ml 1 points 13 minutes ago

tailscale is more of a mesh thing right? that's what my wireguard configuration is missing: connection between clients outside my home network

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[–] Goblinmancer@hexbear.net 7 points 10 hours ago

We are charlie kirkkkk we carry the flame we'll fight for the gospel we honor his naaameee

[–] LeeeroooyJeeenkiiins@hexbear.net 8 points 10 hours ago (1 children)

People who anthropomorphize AI are weird. Anyway do you think my roomba gets scared when i pause it and put it in a different room and close my door

[–] ClathrateG@hexbear.net 4 points 9 hours ago

idk i've called my toaster etc a [preremoved] plenty of times

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