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Seeing how much you liked our "Sea Bunny" and "Sea Sheep" post, we decided to dive deeper to see what else is hidden beneath the sea. We were pleasantly surprised to find that the ocean is full cute slugs!

Most of these “slugs” are actually snails that have lost their shells and gained new characteristics through evolution. For example, sacoglossans are sometimes called “solar-powered sea slugs” because they use chloroplasts from the algae they eat in their own tissue.

Vote for your favorite, or if you happen to be a deep-sea diver, post  your own pictures below!

#1

Sea Sheep (Costasiella Kuroshimae)

Green sea slug with leafy appendages and small pink tips on a mossy surface, showcasing unique alien-like features.

More about Sea Sheep.

Jim Lynn Report

Kat
Community Member
10 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

It's so cute..looks like a cow or sheep with a bad perm and hair color!! Lol

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    #2

    Blue Angel (Glaucus Atlanticus)

    Blue sea slug with intricate, alien-like appendages resting on sandy ocean floor, showcasing unusual marine life features.

    Blue sea slug with intricate, alien-like appendages resting on sandy ocean floor, showcasing unusual marine life features.

    Paul Hypnos Report

    #3

    Phyllodesmium Poindimiei

    Close-up of a vibrant pink and purple sea slug with alien-like tentacles on the ocean floor, highlighting unique sea slug features.

    Ken Thongpila Report

    Kat
    Community Member
    10 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    Wow! It's gorgeous!! So psychedelic!! This would make a cool black light poster!!

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    #4

    Dirona Albolineata

    Close-up of a vibrant sea slug with translucent purple cerata glowing underwater among marine rocks.

    Jeff Goddard Report

    Kat
    Community Member
    10 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    So ghostly and mystical looking!!

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    #5

    Cadlinella Ornatissima

    Close-up of a colorful sea slug with pink and white appendages, showcasing unique features of alien-like sea slugs underwater.

    Jim Chen Report

    #6

    Janolus Fuscus

    Close-up of a white and orange sea slug underwater showing alien-like features on a rocky ocean floor.

    Daniel Hershman Report

    Kat
    Community Member
    10 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    I can't believe how beautiful all these little sea creatures are! We take for granted how amazing our Planet is! And we don't seem to have a problem destroying all the wonderful and amazing things God has giving us...

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    #7

    Hypselodoris Kanga

    Close-up of a colorful sea slug with purple and yellow spots on a dark ocean floor, showcasing unique alien-like features.

    Doug Anderson Report

    #8

    Cyerce Nigricans

    Black and orange patterned sea slug on ocean floor illustrating unique sea slugs that inspire alien-like appearances.

    Allen Lee Report

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    #9

    Sea Bunny (Acanthodoris Pilosa)

    White spiky sea slug on the ocean floor showcasing unique alien-like features in marine life.

    Jim Anderson Report

    #10

    Leaf Slug (Elysia Chlorotica)

    Close-up of a green sea slug with intricate vein-like patterns, showcasing unique alien-like features underwater.

    genealogyreligion.net Report

    HalfeyHalphstein
    Community Member
    10 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    This sea slug is capable of producing its own food from photosynthesis. The green pigment inside its body is really chlorophyll, the same pigment found in green plants used to absorb the light energy for photosynthesis. However this sea slug did not make the chlorophyll itself, instead it was obtained from the algae they consumed at earlier stage of their life.

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    #11

    Lettuce Sea Slug (Elysia Crispata)

    Purple and blue sea slug with ruffled edges on a coral reef, showcasing unique alien-like features in marine life.

    Ashley Hauck Report

    AshleyHauck
    Community Member
    10 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    Thanks for picking up my photo of E. crispata! Here's an excerpt from my blog about it: Lettuce Sea Slug With a name like E. crispata and an appearance like curly salad greens, the Lettuce Sea Slug could almost find itself at home in your crisper drawer. It looks like a nudibranch, and those who know me know I love nudibranchs, but it isn't. It's not even closely related to nudibranchs. It belongs to a different category of slug entirely, known as "sap-sucking slugs," named for its propensity for slurping the juicy bits out of the algae it eats. It even retains chloroplasts in its tissues that provide it with sugars. AND it's frilly. Sweet. - See more at: http://www.ashleyhauck.com/blog/curacao-slugs-snails-spirobranchs/

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    #12

    Flabellina Iodinea

    Colorful sea slug with bright red and blue hues on a sandy ocean floor, showcasing alien-like features of marine life.

    imgur.com Report

    Denise Liebmann
    Community Member
    9 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    I would love to see this one in motion....but that is true of all these beauties.

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    #13

    Janolus Barbarensis

    Close-up of a colorful sea slug with orange and blue-tipped appendages on a textured yellow surface, showcasing alien-like features.

    Tory Kallman Report

    KevinGarry
    Community Member
    10 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    This is a Janolus fuscus and NOT a J. barbarensis, which are tipped with orange and blue.

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    #14

    Chromodoris Alius

    Colorful sea slug with spotted pattern and antennae on ocean floor, showcasing unique alien-like features of sea slugs.

    Eugene Lim Report

    #15

    Hypselodoris Apolegma

    Purple sea slug with orange appendages on a coral reef, showcasing unique features of alien-like sea slugs on Earth.

    Klaus Stiefel Report

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    #16

    Mediterranean Cow (Vaquita Suiza)

    Sea slug with white body and large brown spots on ocean floor, showcasing unique alien-like features of sea slugs.

    Javier Atero Report

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    #18

    Willan's Chromodoris

    Close-up of a blue sea slug with intricate patterns and textures showcasing unique alien-like features underwater.

    Allen Lee Report

    #19

    Hermissenda Crassicornis

    Close-up of a colorful sea slug with vibrant blue and orange patterns, showcasing unique alien-like features.

    Jett Britnell Report

    SSSnifferWolf !
    Community Member
    5 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    It looks neon! Is it glowing also?! Wow! 🤩 10/10 alien sea slug

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    #20

    Phyllidiella Pustulosa

    Close-up of a purple and black patterned sea slug on sandy ocean floor showcasing unique alien-like features.

    Sheraca Report

    #21

    Flabellina

    Bright purple sea slug with spiky appendages crawls on underwater plant, showcasing unusual alien-like marine life features.

    Dani Barchana Report

    Tania Robinson
    Community Member
    9 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    It's the name i love! I might name my daughter Flabellina.

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    #22

    Glossodoris Atromarginata

    Close-up of a black and white sea slug, showcasing alien-like features in its natural underwater environment.

    Sylke Rohrlach Report

    Jerry Matlock
    Community Member
    6 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    Accepted scientific name is Doriprismatica atromarginata and commonly referred as the Black-margin Nudibranch

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    #23

    Unknown

    Close-up of a colorful sea slug with vibrant yellow and blue patterns underwater, showcasing alien-like features.

    Todd Aki Report

    #24

    Glossodoris Atromarginata

    Yellow sea slug with wavy black-edged frills resting on the ocean floor, showcasing alien-like features of sea slugs.

    Stefan Follows Report

    Yayoi
    Community Member
    7 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    Like a shiitake mushroom with 2 ears ;)

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    #25

    Donut Nudibranch

    Two colorful sea slugs with unique patterns cling to underwater coral, showcasing alien-like features on planet Earth.

    govs / 清元 Report

    #26

    Banyuls Sec Vallenti

    Close-up of a vibrant orange sea slug with translucent body and intricate appendages, showcasing alien-like marine life features.

    Kevin Bourdon Report

    #27

    Mexichromis Multituberculata

    Close-up of a sea slug with purple and white markings, showcasing unique alien-like features on a dark background.

    Irwin Ang Report

    See Also on Bored Panda
    #28

    Acanthodoris Lutea

    Bright orange sea slug with textured body on a coral reef, showcasing unique alien-like features of sea slugs on Earth.

    Matt Knoth Report

    #29

    Ceratosoma Amoena

    Colorful sea slug with red and orange patterns resting on a marine surface, showcasing alien-like features underwater.

    Alistair Merrifield Report

    #30

    Phyllodesmium Opalescens

    Colorful sea slug with vibrant neon appendages on ocean floor, showcasing unique alien-like features of sea slugs.

    Irwin Ang Report

    #31

    Trinchesia Yamasui Hamatani

    Colorful sea slug underwater with bubble-like appendages, showcasing unique alien-like features of sea slugs on planet Earth.

    Jun V Lao Report

    #32

    Chromodoris Strigata

    Colorful sea slug with black, white, and orange stripes on ocean floor, showcasing unique alien-like appearance of sea slugs.

    Dani Barchana Report

    #35

    Cuthona Sibogae

    Colorful sea slug with vibrant orange and purple spikes resting on sandy ocean floor, showcasing alien-like marine life.

    Brian Mayes Report

    #36

    Phyllodesmium Serratum

    Bright pink and purple sea slug with curled appendages resting on dark ocean floor showcasing unusual alien-like features.

    Klaus Stiefel Report

    #37

    Onchidoris Bilamellata

    Close-up of a unique sea slug with bubble-like texture, showcasing alien-like features of marine sea slugs on Earth.

    Alexander Semenov Report

    See Also on Bored Panda
    #38

    Okenia Hopkinsia Rosacea

    Bright pink sea slug on sandy ocean floor, showcasing alien-like features of unique sea slugs found on Earth.

    Matt Knoth Report

    #40

    Phyllidia Ocellata

    Colorful sea slug with bright orange and black patterns covered in white bumps on sandy ocean floor, showcasing strange alien-like features.

    Bo Pardau Report

    #42

    Chromodoris Sinensis

    Close-up of a colorful sea slug with orange edges on a rocky surface, showcasing unique alien-like features.

    Eugene Lim Report

    #43

    Nembrotha Kubaryana

    Close-up of a colorful sea slug with bright orange and green patterns on a coral reef environment.

    Karen Honeycutt Report

    #44

    Goniobranchus Albopunctatus

    Close-up of a colorful sea slug with orange, white, yellow, and purple patterns living on the ocean floor.

    Todd Aki Report

    #47

    Chromodoris Reticulata

    A red and white sea slug on the ocean floor, showcasing unique features of alien-like sea slugs.

    Alvin Toh Report

    See Also on Bored Panda
    #48

    Melibe Leonina

    Transparent sea slug with glowing patterns and delicate tentacles resting on a brown underwater surface, showcasing alien-like features.

    www.ashleyhauck.com Report

    Miranda Tagliamonte
    Community Member
    6 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    I love these things. They have terrifying giant mouth-hoods, and yet they still have those little bunny-ear-like rhinophores on their heads. They’re like nightmare bunnies. Also, they release watermelon-scented defensive toxins.

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    #49

    Hooded Nudibranchs

    Translucent sea slugs and marine life underwater with sunlight filtering through, showcasing unique alien-like sea creatures.

    Report

    #50

    Marionia Platyctenea

    Close-up of a pale sea slug with textured skin and protrusions, illustrating unique alien-like marine life features.

    Report

    raelyn rice
    Community Member
    6 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    Is it just me or is this slug flipping the bird lol 🖕

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    #51

    Ceratosoma Brevicaudatum- Victoria,australia

    Colorful sea slug with red and purple spots underwater, showcasing unique alien-like features of sea slugs on Earth.

    Report

    Rachelle Oliver
    Community Member
    5 years ago Created by potrace 1.15, written by Peter Selinger 2001-2017

    All very beautiful and interesting. God always amazes me ! 👣👣👣

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