Dive into the deep blue sea and explore amazing sea-themed original characters! From majestic mermaids to powerful sea creatures, there's a whole underwater world waiting for you. These characters are inspired by the ocean's beauty and mystery. Check out all the fantastic creations people have made and share your own too!

Sea OCs (70 characters)

@MelodicTearzz
★~ Atticus is a humanoid seal, exploring the beach when it's a hot and sunny day. They love collecting shiny stuff and have a massive collection of shells and old coins they've found burried in the sand and on the seabed. ~★★~ They're very ...
#anthro oc
@ChocoChan
Seastar is a special Slugcat, which glows in the dark and mostly lives in Caves and the water. They love the darkness, and try to avoid the daylight as much as possible, since it makes them slower.They are know for being an expert in surviv...
#Sea
@HogwartsFailure
Personality: Suki is an incredibly curious individual. He’s very curious about humans, human culture, and so so much more. He's a very sweet and gentle person, but he's also a little gullible. He is incredibly naive due to having been shelt...
#sea
##creatures of the deep
@Eyethekitcat
A very silly and happy bioluminescent sea-ish creature. He lives in the under-sea part of the sea islands. He has an orange fish pet that the humans brought along from their planet. It has a crush on it's best friend Fishy. 
#sea
#seacreature
#Sea-ish
@MelodicTearzz
♣︎~ Atlas sends a lot of time hiding in dark places and caves. They don't really like being out and about when there's humans, especially when it s a hot day and there's people on the beaches. They don't particularly like humans that much.....
#jellyfish
@lukochi
a curious zebra-feather sea star who left the sea to explore and to know more about the landhis origins is japan so he can speak a little japanese, but he understand it all. he thought that the land was safer than the sea but turn out it wa...
#sea
#feather star
#shootingstar
@LiminalLegion
Finn loves the swimming and surfing but because of how short his legs are - being a corgi and all - he needs to wear a lifejacket. With swimming being his biggest passion, he is seen wearing a lifejacket pratically 24//7!
#Cardigan Welsh Corgi
@ShinyHunterKai
A bubbly and curious breakfast mermaid who loves to have fun! She has a fish friend names Hash who travels with her wherever she goes.
#breakfast
@ShinyHunterKai
Bermuda is an eldritch monster/sea captain. After being locked away at the bottom of the ocean for centuries the curse holding him captive finally broke. There is just one problem. The world has changed a lot in the time he was gone and the...
#octopus
@ChocoChan
Yumi is a small Starchild, which spent her first 10 years on the beach and the sea. Thanks to this, she resembles a Sea Bunny and even can transform into one! She goes to the same class as Mono, Shinie and Crystal, and is known for her good...
#Sea Bunny
@RabbitJaguar
Octopus is very shy and quiet, incapable of human speech. She usually clings to Submarine or Sunshine, but she is also curious by nature and will sometimes stray off on her own. She likes looking for trinkets and shiny things to collect, an...
#sea
#songfolk
@ChocoChan
Morgana Abella is a calm being, who also loves to be social and talk to others.She collects treasures from the seaground to sell them in her little store and she enjoys peaceful days and nights.Every day, she listens to the radio, and she s...
#flower
@UncleCucky
Her body is made of seafoam and water with bones of gold.
#sea
@hailtothethief
NAME : Emotional Rent Control PRONOUNS : Any SPECIES : Modified Bear + Shrimp TYPE : Passive LOCATION : The Coast HEIGHT : 2'7 VOICE CLAIM : 
#Shitpost
@Eyethekitcat
Moira is goddess of the sea. She is incredibly powerful. Moon is her brother. Lady nature is her mother.
#sea
#goddess
@woohoo
Working dawn from dusk, the Blackfin Bistro has had Eldoris Inklet as their number 1 employee for months, but one small mistake could mean Calamari as the new daily special!Eldoris is an incredibly anxious waiter with the helpful capability...
#sea
@DreamsForVal
Expandable #27485 - Clayton Dart___________________________________Clayton (Clay) was sent down in a group of four other prisoners to retrieve the crystal, though have not yet returned or have been claimed dead. Clay and the rest of his gro...
#sea
#pressure
#oc
@ColadaTheJerboa
A Scientist and Mage who has an obsession with finding the Key to immortality, Draxus is a rather Cruel individual who will run tests and experiments on anyone and anything that he can capture, usually without any sedation. He also seeks a ...
#sea
@Ilovecats
Fish / sea creatures hybird that can breath under water. Exploring the world on land. :p
#sea
##fish
@4rcanum_
He is from a story I made with friends, where we turned plushies into ocs.This guy is based on a spotted seal.He comes from a rich and quite influential family in France, he ended up running away because he would have been arranged married ...
#sea
##sealife
##sea
#fishing
@DreamsForVal
[REDACTED] was one of the older Expandables, being sent off on an exhibition in the year 1997. [REDACTED] made it far into the Blacksite but ultimately met his demise to a Searchlight while fixing some genorators, classing him as dead and t...
#sea
#pressure
#oc
@Carol_the_Cat
A Lapis Lazuli Colored Siamese Cat with a Marine Motif and her Signature Weapon, The Trident of Divinity. The Trident of Divinity includes a Starfish and a Pearl. Her Accessories is an Anchor Ribbon and a Anchor Scarf. Lapis is a Sea Divini...
#sea
#lapis
#divinity
#trident
#siamese cat
@joestarred
brizo is a manta ray kid who lived in various reefs, before being taken to an aquarium to live there.
#sea
#ocean oc
@Noe1010
Born from the depths of the secret black ruby coral reef in the enigmatic dark sea, hr red eyes and vibrant red hair stand in striking contrast against her rich and dark skin tone, a reflection of her unique features from her birth location...
#sea
@mymelodyaripoo
Neptune is a insecure and short girl, she is about 14 years old and is born with the power of usuing the water source from her body to create a shield and acid rain. Because the water source she gets is from her body, and to prevent her bod...
#sea
#female oc
##sea
#dear神様!
@MotherOfBirb
Tetra is a Stei’chondrich from the waters around Reylern's Island. When she was in her egg, it was displaced and fell into the deep ocean, causing her to have stunted growth. As she fought her way to the surface she was attacked by a much l...
#sea
##sea
@GhostedSea
Wyatt is a 28-year-old undead poet who was formerly a sailor and a hunter; mainly known for his track record of hunting Avians and Sirens and selling their tails, feathers, scales, etc. in the hidden market.After being ultimately murdered b...
#dark fantasy
@SalemCalprium
From the deepest, darkest depths of the sea reach, North is quite an astonishing creature to behold. His looks are of both the eerie and majestic variety in multiple ways. In his sea creature form, he comes in at a whopping 19ft long. His s...
#sea
#Seamonster
#mercreature
@DreamsForVal
[REDACTED] was sent out on the expedition and never returned, being labled as yet another dead prisoner who couldn't retrieve the crystal. [REDACTED] was rumoured to have been mangled to death by Z-90 (Wall Dweller) due to not paying attent...
#sea
#pressure
@Electrozilla
An old military robot built in 1896. Grouchy old man. No longer works in the military, and instead sits around and plays sudoku puzzles all day. 
#sea
#nautical
@VikeshCreationz
Sea Asturias is a Spanish chark (not a species, a portmanteau if you will. She's a turkish van cat/ambiguous shark) who really likes swimming. As you can tell, she also really likes finger gunning.She will call you dude. You are by default ...
#sea
@Fr3shlyBaked
Nessie "Swamp" Brooke has always hated the top hero organization of Big City, OPAL, vowing to take them down herself. Forming a small group of villains to take down an entire organization, she is. ...somehow actually like wining in the figh...
#sea
@mindymations
gay sea creature thing
#sea
##humanoid
##sea
#axolotol
@k1nnLostAtSea
Kou, a 19-year-old enigmatic traveler with a bittersweet past. Born of both human and divine origins, he roams the world in search of his long-lost love, a ghostly darkness that once captivated his angelic heart. Enduring the burden of an i...
#sea
#summer
#soulmates
#love
#Spiritual?
@Getfired
Meet the one and only deep sea spawn, Rex!Nobody is sure what created them, but something did.
#Sea
@ThatDemiCheerio
Gay jellyfish man.He's so yesHe was made for a pirate collab :)He's beautiful. I love him. I reused a friend's oc's eyes for the 4th or 5th time lmaoI slightly based him off of Ariel from the little mermaid
#sea
#collab
@Askir
A pearl is an innocent, round, cute and preciousthing that we want to keep close and loved.Pearl is a little mermaid living in Egee sea in Greece. A very long time ago, a little boy in Greece tried to explore the sea, he dived in the sea an...
#sea
#pan
@_dusty___rose_
(ㅅ´ ˘ `)♡ MISTY🌀🐬🎀。 ⊹˚.⋆ - obsessed w/marine life and the ocean!!- fashion girly she loves making outfits and layering - scrapbooks cute photos of marine animals, she also likes taking photos to use in her scrapbook :3! - loves cute thin...
#sea
#marine