#Rhizostoma pulmo

[sitting-on-me-bum]

Rhizostoma pulmo by Alexander Semenov

#barrel #jellyfish #Rhizostoma pulmo #underwaterphoto #under water #Mediterranean #sea #flickr #alexander semenov #photographer #nature

[raveneuse]

Barrel Jellyfish (Rhizostoma pulmo), found in The Black Sea, off the coast of Odessa

#barrel jellyfish #rhizostoma pulmo

[hawamun]

Sisters of Eleusis! They're all mermaids and based on different creatures u can find in the sea around Greece ^^

#my art #artists on tumblr #digital art #character design #original art #oc #balkan #folklore #folk costume #eleusis #mermaids #etc etc and so on and so forth. lmao #oh and if ur curious on what they are #from left to right: meditterenean monk seal and then rhizostoma pulmo jellyfish AND THEN gulper shark ^^

[gocagames]

Jelly n.45 - 🪝 DUMSUN 🪝

● It uses the hooks of its tentacles to eat as if they were fishing rods.

● The color of its hooks attracts all kinds of fish. To their grave.

#rhisostoma #rhizostoma #pulmo #gancho #hook #medusa #jellyfishers #video games #indiegamedev #jellyfish #indiedev #indie games #gaming #art #gamedev

[donuts4evry1]

#Legitimately this book is AMAZING and it's 100% free in pdf form #i want to print it out and bind it into a book omg omg omg omg #or maybe i can recreate it by hand and book bind it myself... mm... #(/j) i don't know how to make paper or bind books #anyways #<3 hehe #this mainly makes use of the cotylorhiza tuberculata (Helios) and the rhizostoma pulmo (the barrel jellyfish) so #like #idk i couldn't help but giggle the entire time I was reading this #jellyfish are so tasty... wish I could eat some #mun rambles #jellyfish

[antiqueanimals]

Grzimek's Animal Life Encyclopedia: vol. 1 - Lower Animals. Written by Dr. Bernhard Grzimek. 1974.

Internet Archive

1.) Blue jellyfish (Cyanea lamarckii)

2.) Australian box jelly (Chironex fleckeri)

3.) Barrel jellyfish (Rhizostoma pulmo)

4.) Nausithoe rubra

5.) Compass jellyfish (Chrysaora hysoscella)

6.) Moon jellyfish (Aurelia aurita)

7.) Crown jellyfish (Nausithoe punctatais)

#marine life #cnidarians #jellyfish #blue jellyfish #australian box jelly #barrel jellyfish #compass jellyfish #moon jellyfish #crown jellyfish

[herpsandbirds]

Barrel Jelly (Rhizostoma pulmo), family Rhizostomatidae, found around much of the Atlantic Ocean

photograph by @venueearth

#jellyfish #rhizostomatidae #rhizostoma #cnidaria #ocean #animals #nature

[pyro-madder]

pros of today : saw a jellyfish

cons of today : saw a jellyfish

#IT WAS VERY PRETTY BUT it's surprising seeing it under the waves like that #and i felt it before i saw it :') on the hat's side or however it's called in english so it's ok #rhizostoma pulmo. lovely blue fringe

[bukomoon]

Rhizostoma pulmo (barrel jellyfish) captured by Arne Kuilman via flickr

#jellyfish #ocean #sea #oceancore #nauticalcore #mermaidcore #underwater #beach #blue #barrel jellyfish #photography #aesthetic #art #sea creatures #marine life

[ps1]

Rhizostoma Pulmo

#jellyfish #4

[certified-diplodocus]

Sooo... jellyfish.

You may have seen this video circulating recently. The original was posted on Facebook by Scuba Ventures Kavieng; this is a colour-corrected edit [link to the original in the post source, because Tumblr is stupid about external links]. It caused a small stir on the internet after being tentatively identified as Chirodectes maculatus, a monotypic genus known only from a single small specimen captured and filmed in 1997, off the coast of Queensland. (That footage is sadly not available on the Internet.)

If you know a little about jellies, you’ll recognise this as a box jellyfish or Cubozoan. Box jellies are wonderfully interesting animals, and differ from the more familiar “true jellyfish” or Scyphozoa in a number of ways:

a more developed nervous system allowing more complex behaviour, including the capacity to learn from experience

true eyes (with retinas, corneas, lenses, the whole shebang)

the ability, unlike true jellies which mostly drift, to actively propel themselves around obstacles and towards prey

...a concerning trait in an animal most notorious for being extremely fatal to humans. (c.f. Wasp Jellyfish, Viper Jellyfish, the delightfully named Common Kingslayer, Irukandji*) * sting symptoms include excruciating pain and “a feeling of impending doom”, and let’s raise a glass to the researcher who first documented Irukandji syndrome by deliberately testing it on himself, a lifeguard, and his nine-year old son: “Eschewing animal models and laboratory studies (not to mention all common sense), Barnes took the two specimens, and proceeded directly to human experimentation.” please read the article linked in my reblog, it’s hilarious. (A lack of self-preservation is a trait apparently common to all jellyfish scientists - the 2005 article on Chirodectes maculatus notes that it failed to sting, or adhere to, the hand and forearm of an incautious volunteer.)

The point is that box jellies are deeply, deeply cool in every respect except basic body plan, which goeth thusly:

box

tentacle on each of the four lower corners

....and while many cubozoans find that four is not enough and multiply to get 4n tentacles, that’s about it. Ultimately, what you end up with is still just a translucent jelly box with string hanging from each corner, like a very sad, very dangerous piñata.

Compare scyphozoans / "true jellies": [top to bottom: Pacific sea nettles Chrysaora fuscescens aka windows screensaver, barrel jellyfish Rhizostoma pulmo, sea cauliflower Cephea cephea, moon jelly Aurelia aurita, lion's mane jellyfish Cyanea capillata]

They may not be all that bright, but by god they’re fancy.

Now let's see the box jellies: [Bonaire banded box jellyfish, which rejoices in the name of Tamoya ohboya; sea wasp Chironex fleckeri; Copula sivickisi; Tripedalia cystophora]

And by cubozoan standards, it is big: according to the diver, "a bit bigger than a soccer ball" (which have a ~21cm diameter), which would make it larger than the 15cm in the original species description.

Where am I going with all this? My point, dear jelly lovers, is that Chirodectes maculatus took a body plan like an inverted plastic bag and made it into the fanciest, most ostentatious chunk of jelly that ever wobbled the seven seas.

Look at it. It’s like a 1970s lampshade set off to colonise the ocean. And isn't it just fabulous.

Please reblog the linked post for sources and further reading. All images via Wikimedia Commons (licensed with some version of Creative Commons.)

#you may not like it but this is what peak adaptation looks like #there are many benefits to being a marine biologist #being stung by box jellies is not one of them #marine biology #jellyfish #box jellyfish #nature writing #cubozoa #my writings #science! #video

[splashing-water]

Rhizostoma pulmo

#jellyfish #fish #ocean #sea #marine biology #marine life #natrue #animals

[loadsofcats]

I saw a jellyfish in the sea today!!! Luckily no-one touched it, even though I think these don’t sting that hard. And some people got quite scared, but I’m still happy for whichever animal I see 😅 It was a barrel jellyfish (I think that’s how it’s called in English; Rhizostoma pulmo), and its bell was approximately 30 cm in diameter.

#jellyfish #my own #photography #it talks

[hypnosiacon-archive]

Hm.. top five jellyfish (or fish in general if there aren't enough jellyfish types)?

I can do both! Jellies first

Physalia physalis - man' o' war

Aurelia aurita

Cassiopea andromeda

Craspedacusta sowerbii

Rhizostoma pulmo

And order with fishes changes sometimes but here are the ones I do love

Chauliodus

Dunkleosteus

Regalecidae - Oarfishes

Anguilliformes - Eels

Erpetoichthys - Reedfish

Bonus mention for Lungfishes (Dipnoi), Gars, Arapaiminae and Koi fishes.

#the codebreaker : asks #caller : cutesymiku

[eclecticstarlightblogger]

Εμφανίστηκαν γαλάζιες μέδουσες που τρομοκρατούν τους λουόμενους

Μετά τις μοβ μέδουσες που έχουν κάνει την εμφάνισή τους στις ελληνικές θάλασσες, τώρα έρχεται νέος πονοκέφαλος που ακούει στο όνομα… γαλάζιες μέδουσες. Ειδικότερα, όπως αναφέρει το Ελληνικό Παρατηρητήριο Βιοποικιλότητας, για έναν μήνα θα έχουμε -όπως κάθε χρόνο- πληθυσμιακή έξαρση της γαλάζιας μέδουσας Rhizostoma pulmo. Τις πληθυσμιακές αυτές εξάρσεις τις βλέπουμε από μέσα Ιουνίου μέχρι…

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[thoughtfullyblogger]

Εμφανίστηκαν γαλάζιες μέδουσες που τρομοκρατούν τους λουόμενους

Μετά τις μοβ μέδουσες που έχουν κάνει τ��ν εμφάνισή τους στις ελληνικές θάλασσες, τώρα έρχεται νέος πονοκέφαλος που ακούει στο όνομα… γαλάζιες μέδουσες. Ειδικότερα, όπως αναφέρει το Ελληνικό Παρατηρητήριο Βιοποικιλότητας, για έναν μήνα θα έχουμε -όπως κάθε χρόνο- πληθυσμιακή έξαρση της γαλάζιας μέδουσας Rhizostoma pulmo. Τις πληθυσμιακές αυτές εξάρσεις τις βλέπουμε από μέσα Ιουνίου μέχρι…

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