True Facts: Freaky Nudibranchs

this is Susie Susie is in the class guest reporter which encompasses snails and slugs specifically and by specifically I mean specifically and by and by I mean and by Susie is a type of sea slug called a nudibranch there are around 3,000 freaky species of neuter breaks but they come in two basic body plans boom body plan can be seen in the eel it nudibranch s-- they can look a bit like claymation pubic hair or like a porcupine rolled around in candy corn their backs are covered with floppy floppy spiky things called sirata these serrata are extensions of their digestive system because why not but they also assist in breathing the other body plan belongs to the Dorrit nudibranch it is the more of the tool doridori pranks have a sturdy fleshy fleshy covering called a mental the mantle can sometimes look like a frilly skirt or perhaps a fashionable poncho some species like the Spanish dancer nudibranch can use this skirt to swim sort of some other nudibranch also try the swimming swimming but in most cases it looks a bit like a muppet simultaneously auditioning for the part of the fu & n in a Sesame Street production brought to you by the word fun it does actually look fun to swim like that like sneezing in outer space upfront nudibranch have two Rhino fours which are kind of like nostrils that have been turned inside out much like our noses can pick up the chemical signals of a fart wafting in the air these Rhino fours can pick up chemical signals in the water this is important because their eyes totally suck they are very tiny and can only sense dark and light like a colorblind machinist in a skittles Factory the nudibranch is unable to appreciate the beauty of its own decoration this one looks a bit like a landspeeder whoa except near the back where you would expect the people's to sit there is a plume of gills that encircle their anus these girls are beautifully folded structures that maximize surface area to extract ox from the surrounding water these allow the Dorit nudibranch to breathe right next to its anus before you judge however to the nudibranch this body plan might feel like an upgrade to understand this let's look at some nudibranch swen they are babies little baby nudibranch look a lot like snails they have a shell and some even form an operculum a little trapdoor for their hidey hole a long time ago the shelled ancestor of snails and slugs got into some freaky contortion torsion is a twisted change in body plan to understand this imagine if you laid down on your stomach and arched your back then you grabbed your left foot with your right hand and your right foot with your left hand now imagine twisting really hard so that your butt faces upwards and is right over your face this is the first yoga pose they teach you when you arrive in hell snails live out their lives cheerfully with this arrangement don't ask why every time you ask why evolution adds or removes and nipple from a cat look it up however millions of years ago after a night of eating jalapeno chili con carne the ancestor of the nudibranch had enough of this head up your body as it transitions to its juveniles state the baby nudibranch loses its shell untwists and does its best to put all of its organs back in some semblance of order that is to say that the nudibranch is a bit of an unnamed snail and at least its mouth and nose have a bit of distance from its Gill ringed anus and yes that one does look like a Pikachu that got busy with a Swiffer the nudibranch mouth parts are under its front parts right between a fingered mustachio of two feeding tentacles that can help it feel around for food they eat a variety of animals many of which like colonial tunicates bryozoans and hydroids are animals that look like plants because the ocean is weird they are among the cutest carnivorous predators and will even eat other slugs and neuter pranks this one's eating a slug called a sea hare because apparently it looks like a rabbit a rabbit whose squirt farting purple ink because he's seriously if we speed it up it looks like he's slurping a noodle they eat with a beak and orange Allah which is basically a tongue with teeth on it which is crazy don't French kiss a nudibranch you'll die here we see in an enemy being hunted by a rainbow nudibranch which does not look like a rainbow at all more like a curtain that a cap cap too but it strikes with the vigor of a proctologist who lost a wedding ring that's like trying to tongue sponge the crumbs out of the bottom of a can of Pringles one group of neuter pranks in the genus Mela B has evolved a different feeding strategy it has traded in its tooth tongue rajala for a head in the shape of a Venus flytrap it uses its head like a seafloor pooper scooper like if you used your hoodie to eat a shrimp taco a skeleton shrimp taco lacking a Cheryl's sea slugs including nudibranch sand this spotted sea hare which does not look like a rabbit must get creative when it comes to defense from predation some have evolved to be very good at camouflage you see these cows I tricked you they're not cows they're nudibranch you thought they were cows must be like a real dum-dum man this one is perfectly camouflaged as an old man with his hands behind his back inspecting his garden damn slugs eating my azaleas that's irony you better stop or I will assault you that's a dad joke some neuter pranks like this ghost melody have gotten so good at hiding they're transparent mostly fortunately they're less transparent insides resemble a bunch of floaty floaty see garbage when played melody many of the animals that neuter Brinks eat contain toxins some Dora Dino D pranks incorporate these toxins into their body parts so they don't taste good the defense after you've been bitten approach is a little late in the process for me but it has been proposed that the bright coloring of some neuter branks has evolved as a warning sign to potential predators clowns has run away some Illit nudibranch take this one step further they eat animals that have specialized stinging cells called nematocysts Glaucus atlanticus for example will eat the Blue Bottle man-of-war jellyfish the jellyfish however contains thousands of these and the mat assists coiled up and ready to fire when disturbed much like but smuggling hand grenades led nudibranch sin jest these cells and transport the immature unexploded ones out to the tips of their sirata where they can use them for their own stinging defense it's pretty cool look at this one they're using like a little laser it's like if when you ate pop rocks you could transport them to the tip of your fingers you perv for a tingly handshake the blue dragon nudibranch also steals cells instead of stingers it steals ooh isn't any microscopic plants incorporating them into its body and using them to produce food from sunlight you know who else does this this little guy it's a Sackler gas and sea slug not a nudibranch but who cares I got it it's cuter than puppies it is mating season and first the nudibranch have to find each other they are often solitary and spread out finding the slime trail of another nudibranch is worth following up on many nudibranch stew this training behavior following another's slime trail until they're right up in it and I mean right up in it but not really right up in it the nudibranch genitals are located up near its head on the right side of its body because of course they are this means that they have to position themselves so their right sides line up think of it like a high-five but with no hands and for genitals that's right for nudibranch SAR hermaphrodites meaning that each is equipped with both a penis and the vagina I know what you're thinking if I had that kind of luggage I'd pack it myself sure once in a while a researcher will find a neuter branks penis inside of its own vagina don't judge it's a lot to keep track of and quite frankly if it's in the way flopping around out there it's the obvious place to put it mean why aren't our pants pockets shaped like gloves there's mysteries in this world doesn't mean you're trying to self-fertilize just some healthy curiosity while meeting both luther banks put their penises inside the other's vagina and both are fertilized in the process now I'm not sure if you can see it but if you squint you might notice that the nudibranch penis has a bit of a barbed hook sort of shape that can make uncoupling a bit of a so much so that the chromodoris reticulata just lets it break off and grow back again it's one way to do it after mating it is time for the nudibranch to deposit its fertilized eggs it does so in a series of beautiful strings and rosettes adorning the shapes of the ocean floor thousands of little eggs that will become thousands of little babies and the circle of life continues listen sometimes feeling safe in a shell isn't worth having your insides all twisted up or having an ass on your head that might be too on-the-nose I didn't mean like an ass on your nose that's I mean too literal the point is sometimes you have to take a risk get out of that she'll and untwist who knows what kind of crazy beautiful thing you might become yes sorry it felt like it should rhyme and that is how the nudibranch do [Music]

Channel: zefrank1

Views: 4,190,835

Rating: 4.9620795 out of 5

Keywords: ze, nudibranch, flabellina, zefrank, true facts, glaucus, dorid, aeolid

Id: F7V8DRfZBQI

Length: 10min 14sec (614 seconds)

Published: Sat Mar 14 2020

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