I was cleaning out my downloads folder today when I found this. You're welcome.
Costasiella kuroshimae - Wikipedia

@abdalian Kleptoplasty! New word for me.

@abdalian
 

Did you know that there are not only sea sheep but also sea bunnies?

https://www.boredpanda.com/cute-bunny-sea-slug-jorunna-parva/

Sea Bunnies: Japan Is Going Crazy About These Furry Sea Slugs

Sea slugs aren't exactly creatures you'd consider to be adorable, but Japan's Twittersphere has just rediscovered what is probably the cutest sea slug ever โ€“ Jorunna parva, a sea slug that looks like a fluffy bunny.

Bored Panda
@abdalian OMG, the steal the chloroplasts from algae and photosynthesize themselves! Nature is AMAZING.
@abdalian Awwww! Never seen this creature before, lovely!
@abdalian this is so cool. Thanks for sharing itโ€ฆdefinitely brightened my day!

@abdalian I LOVE THESE ADORABLE LITTLE FLOOFSLUGS SO DAMN MUCH ๐Ÿ’–๐Ÿ˜๐Ÿ’–๐Ÿ˜๐Ÿ’–๐Ÿ˜๐Ÿ’–

#Pokemon

@abdalian Kid the Younger informs me that sea sheep need to be referred to as โ€œdorables,โ€ so when people ask what it is, one can reply, โ€œItโ€™s a dorable.โ€
@abdalian
I think Ghibli made a movie with this guy in it.
@abdalian What was it doing in your downloads folder? Did it find something to eat in there or something?
@melivia to be fair, there was a lot of detritus in there for it to munch on!
@abdalian managing to be incredibly cute and beautiful at the same time
@abdalian
Shaun the deep sea sheep!
The 'sheep' that can photosynthesise

Much like its herbivorous namesake, the ocean-dwelling "leaf sheep" grazes for food; however, it supplements its diet in a unique way: through the power of the sun.

BBC

@abdalian

I remember watching 'sea bunnies' with my cat a few years ago, those are also cute. Probably poisonous, but still cute ๐Ÿ˜Š

@abdalian
Looks like AI-generated.

@timursagdenov @abdalian The first time I saw this, ML was still making unrecognizable nightmare blobs (if that), so I can vouch for it at least.

Some things in life just look ML-generated. ๐Ÿ˜ฉ

@abdalian thank you! (Also for the alt text)
@abdalian reminds me of the Diving Instructor that I met in Siquijor who wrote a book aboit said nudibranches...
@abdalian: So cute! These two black dots make it look like a comic sheep.
@abdalian awww its sooo cute but orobably super venomous to touch. so nooo pettins tyvm lol
@abdalian This is why I love #mastodon Thank you so much for making my day. I presume they are rounded up by sea dogs.

@MrInappropriate Iโ€™m glad it made your day! It sure made mine when I ran across it randomly chilling in my downloads folder.

Almost certainly rounded up by sea dogs. I guess the sea dogs also round up the sea cows? So many questions!

@abdalian ah, it's the chonkers sheep from Shawn ๐Ÿ˜ธ
@abdalian
I just learned that sea sheeps indirectly perform photosynthesis like plants! ๐Ÿคฏ
@abdalian it may be disguised to look pretty but it' still a SLUG !! /me has a terrible phobia about slugs ...
@abdalian aaah! this triggers trypophobic-style reaction in me! Itchy all over ๐Ÿ˜ฉ
@abdalian Why do I love this so muchโ€ฆ?
@amiserabilist @LoganFive @abdalian Ermintrude! As a kid, I didn't realise adults were watching Magic Roundabout wondering where the writers and animators got hold of such high quality weed.

@level98

i am not watching current kids shows but remember mine so fondly.

like an old friend.

well they are in a way.

@LoganFive @abdalian

@amiserabilist @level98 @abdalian Iโ€™m not aware of this show but it sounds like itโ€™s time to search for it on YouTube.
@LoganFive @amiserabilist @abdalian If you do, make sure you find the original. They tried to do a modern reboot. IMO was not as good. It did not capture the psychedelic nature of the original.
@abdalian
Looks like Ermentrude from The Magic Roundabout!
@dheadshot I had never heard of her, but youโ€™re the third person to remark on the resemblance! Iโ€™ll have to watch some Magic Roundabout