--- title: "Mermaid & Underwater Birthday Theme Decor in Bengaluru" description: "Need a magical mermaid or underwater birthday theme? Birthday365 creates immersive sea-themed party decor in Bengaluru, from vibrant balloon bubbles to custom props." canonical: https://mytribe.in/birthday0365/themed-kids-birthday-party-planning/underwater-mermaid-magic last_updated: 2025-09-08 --- # Underwater & Mermaid Theme Birthday Decor in Bengaluru Tribe Verified · 10 years of creating Bengaluru's birthday magic By [Birthday 365](https://mytribe.in/birthday0365) · Party setup across Bengaluru; Visit office in Jayanagar · ₹65K per event (estimate) Part of [Themed Kids' Birthday Party Planning](https://mytribe.in/birthday0365/themed-kids-birthday-party-planning). [View full gallery](https://mytribe.in/birthday0365/themed-kids-birthday-party-planning/gallery) Transform your venue into an oceanic paradise. We craft immersive underwater worlds with shimmering backdrops, friendly sea creatures, and custom balloon bubbles that delight every child. ## Photos and videos - ![We created a magical underwater world for Avira's 2nd birthday. The setup featured a long dining table for the little guests, a colorful backdrop with whale and seahorse details, and vibrant balloon arches.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/0681516b-b73d-4f64-b565-3aa13101165d) - ![A collage from Aarna's mermaid-themed party. It shows the full, detailed stage setup with a large mermaid prop, and a group photo of the happy family and guests.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/0a6835db-4713-4326-bc29-4293849fe525) - ![A vibrant "Under the Sea" party for Poorvi. The stage was filled with colorful sea creatures like an octopus and crab, a large seashell, and a beautiful mermaid backdrop.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/29a351bc-4a81-4685-a527-67fe5ecf33db) - ![Seashell wishes and starfish kisses! This outdoor mermaid-themed party for Swara featured a beautiful pastel purple and pink setup with a large sequin backdrop and a giant clamshell prop.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/13134127-003e-4bc3-8bcd-c536d7ecbff0) - ![An enchanting underwater adventure for Tejas. The decor included a large yellow submarine prop, a variety of sea creature cutouts, and a backdrop that glowed with soft blue light.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/8ae6e94a-9722-44bc-ac6c-00e9437b5565) - ![A welcoming entrance to our mermaid-themed party. Guests walked through a purple archway adorned with balloon "bubbles" in shades of pink, teal, and blue.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/09d01318-9e40-4f46-8639-9d1563377907) - ![A closer look at the details from our "Under the Sea" party, showing a yellow submarine, a boat-shaped shelf with seashell decor, and other friendly sea creature props.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/18901176-c530-41ed-9eb6-11a7daf5697c) - ![A truly magical moment as a little one gives our life-sized Little Mermaid prop a gentle touch. These are the interactions that make our parties so special.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/c3202463-5d87-4b32-9976-30d9514dfb4e) - ![A duplicate of image 8, showing the full setup for Avira's underwater-themed 2nd birthday party.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/08180f50-b73c-4ac8-83ff-a78e27077fb3) - ![A duplicate of image 8, showcasing the vibrant and fun underwater world we created for Avira's celebration.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/152fa2d6-e419-492d-a584-ab609fe19322) - ![A duplicate of image 28, showing the beautiful outdoor mermaid party setup with the birthday girl and her family.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/1879285f-5d65-4b1b-98f6-5a6b137e9948) - ![A collage of details from Avira's underwater party, including a large balloon-filled number "2", a seahorse cutout, and a custom table centerpiece.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/1b2ca22f-25e9-44da-824a-dcc22ebaa95d) - ![A lovely family photo from Noorvi's Little Mermaid-themed first birthday, set against a shimmering backdrop and pastel-colored decor.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/2c9f9c66-00ec-46a1-ac4c-c6b1ea4da8c7) - ![The main cake-cutting area for Avira's underwater party, featuring a large red clamshell prop and a custom-designed backdrop.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/2f09dcb1-a135-4603-9830-13e82bd97a30) - ![More details from the "Under the Sea" party, including a boat-shaped shelf filled with shells and a friendly octopus prop.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/417ca0fb-95b3-4a9d-84b1-0db87d836873) - ![A close-up of the decor for a first birthday under the sea, featuring a large "1" sign, a giant clamshell, and a seahorse-themed backdrop.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/42011ef1-89aa-4589-a663-7bc5ab8f62e1) - ![A collage of details from Avira's underwater party, showing the balloon decor, custom centerpieces, and a photo of the birthday girl.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/57ded300-a13e-4ae6-9ab2-9e9f64573c7d) - ![A duplicate of image 28, capturing the birthday girl and her family at the beautiful outdoor mermaid-themed party.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/5f6f3b1a-eaf9-4bca-aa8e-1e677f84518e) - ![More details from Avira's party, including a large pink clamshell prop, a custom-themed cake, and a beautiful balloon garland.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/66e96fa5-a78b-4722-864a-4ce7dd97e3c7) - ![A collage showing the birthday boy enjoying the bubble entertainment at his under-the-sea themed party.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/6f705073-8be8-4942-97f8-45bee1bc9b3d) - ![A duplicate of image 28, showing the full view of the outdoor mermaid party and a happy family photo.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/74b67cd4-c180-4bfa-8238-77d189538d2b) - ![A duplicate of image 8, showing the immersive underwater theme we designed for Avira's 2nd birthday.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/84df7324-e226-41e0-8aea-9bb53b8779a5) - ![The main stage for Tejas's under-the-sea party, featuring a large crab prop, an anchor, and a variety of friendly sea creatures.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/9a48438a-19b1-47df-bd2c-4037f274b599) - ![A duplicate of image 8, highlighting the colorful and detailed setup of the underwater-themed party.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/9b4723d7-ef01-4a16-80fd-e95a634424f2) - ![Details from a mermaid party, including a fun signpost directing guests to the "Fun Zone" and a boat-shaped shelf with ocean-themed decor.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/a29641cf-7809-48c6-950e-4588ac48ab37) - ![A duplicate of image 28, showing the birthday girl posing on the decor and a family photo from the mermaid party.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/a5ebd963-5e04-4cbf-a181-66776a480e78) - ![A duplicate of image 206, showcasing the fun and thematic details of a mermaid party.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/a5fa73b1-71bd-4975-903f-cb8885d04cc7) - ![A close-up of the Little Mermaid party for Noorvi, featuring a large Ariel prop and a shimmering sequin backdrop.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/a80b2fad-8efb-45b8-a395-65e07f5855b8) - ![A duplicate of image 28, showing the beautiful outdoor mermaid party setup.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/a825b2e9-a64e-400c-81fd-65ec64d38089) - ![The full outdoor setup for Swara's mermaid party, set against a backdrop of palm trees, with a large sequin panel and a giant clamshell.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/bc56ec8c-85de-4a87-bd69-78523ddd430a) - ![A collage from Swara's 6th birthday mermaid party, showing her posing with a large balloon-filled number "6" and custom-themed table centerpieces.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/c7469967-51bd-46c2-bb4f-c146ac577729) - ![A duplicate of image 75, showing the main cake table area for Avira's underwater party.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/de73272f-c631-4f13-b6e4-67148b79fd8f) - ![A two-panel view of Poorvi's mermaid party, showing the full stage setup and the themed dining area for the children.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/e431755b-f165-4808-be29-b10b7abc5d64) - ![A duplicate of image 227, showing the full outdoor setup for Swara's mermaid-themed celebration.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/ee57d5c9-acca-486a-9918-804a6b2a5892) - ![A duplicate of image 8, showing the long-table setup for the kids at Avira's underwater party.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/f0007beb-50ba-47a7-9d60-cd9f3fbe0ec0) - ![A duplicate of image 186, showing the full stage and a closer view of the yellow submarine at Tejas's under-the-sea party.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/f107306d-640f-4993-886e-d2d3b0c39b0b) - ![A duplicate of image 237, showing the birthday girl and the themed details from her 6th birthday mermaid party.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/f2271020-47ab-4398-b1e2-5b295e114e96) - ![A duplicate of image 139, showing details like the cake, balloon garland, and large clamshell prop from Avira's party.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/f23840e3-d8d0-46b1-8099-397002877e89) - ![Bansuri's mermaid birthday stage in turquoise, purple and gold balloons, with boat shaped shelves and a big 10, plus the family gathered at the cake.](https://assets.mytribe.in/insecure/raw:1/plain/s3://mytribe-assets-production/b4c1d469-90c8-4b6b-b101-794a63b49505) ## About Underwater & Mermaid Magic Instead of just pinning a backdrop to the wall, we look at the flow of your venue. Whether you are using a compact apartment living room or a banquet hall, we adjust the scale of our 3D fiber props—like our coral reefs and treasure chests—so the room feels immersive, not cluttered. It is all about making sure the space works for your photos while leaving enough room for the kids to enjoy their play area. Planning an under-the-sea party involves more than just blue streamers. We consider the total vibe of your event. For smaller home celebrations, we focus on high-impact zones like the cake table and entrance, using custom foam-board cutouts of mermaids, seahorses, and friendly crabs. In larger banquet halls across Bengaluru, we bring in our premium fiber props—like life-sized submarines, treasure chests, and coral reef structures—that really anchor the room and give guests that 'wow' factor when they walk in. We prioritize quality materials. Our balloon bubbles use a mix of metallic and pastel matte shades to mimic the shimmer of light on water. If your little one has a specific favorite, like a mermaid princess or a yellow submarine, we incorporate those as focal points. We handle all logistics, from the heavy prop transportation within city limits to the breakdown after the party, so you can actually enjoy the celebration with your child. Our team ensures the lighting highlights the decor without being harsh, making it ideal for capturing those first birthday or milestone photos. ## About Birthday 365 We are Birthday365. Ten years ago, we started this journey as a surprise for each other, and today, we help families across Bengaluru create memories. Our own kids love the magic of the ocean, so we put extra love into these mermaid and underwater sets to make sure your little one feels like they have stepped into a storybook. [See all of Birthday 365's services](https://mytribe.in/birthday0365) ## More from Themed Kids' Birthday Party Planning by Birthday 365 - [Featured](https://mytribe.in/birthday0365/themed-kids-birthday-party-planning/featured) - [Enchanted Princess & Fairy Tale Parties](https://mytribe.in/birthday0365/themed-kids-birthday-party-planning/enchanted-princess-fairy-tale-parties) - [Action-Packed Superhero Adventures](https://mytribe.in/birthday0365/themed-kids-birthday-party-planning/action-packed-superhero-adventures) - [Wild Animal & Jungle Safaris](https://mytribe.in/birthday0365/themed-kids-birthday-party-planning/wild-animal-jungle-safaris) - [Character Favorites Brought to Life](https://mytribe.in/birthday0365/themed-kids-birthday-party-planning/character-favorites-brought-to-life) - [Wheels, Tracks & Construction Zones](https://mytribe.in/birthday0365/themed-kids-birthday-party-planning/wheels-tracks-construction-zones) - [Whimsical Worlds & Dreamy Decor](https://mytribe.in/birthday0365/themed-kids-birthday-party-planning/whimsical-worlds-dreamy-decor) - [Royal Prince & Castle Parties](https://mytribe.in/birthday0365/themed-kids-birthday-party-planning/royal-prince-castle-parties) - [Fun & Games: Entertainment in Action](https://mytribe.in/birthday0365/themed-kids-birthday-party-planning/fun-games-entertainment-in-action) - [Additional Work & Party Details](https://mytribe.in/birthday0365/themed-kids-birthday-party-planning/additional-work-party-details) ## More services by Birthday 365 - [Milestone Event Planning & Decoration](https://mytribe.in/birthday0365/milestone-event-planning-decoration) ## Similar work from other experts - [Under the Sea Birthday Decoration in Bangalore](https://mytribe.in/thepartyrush.in/kids-birthday-party-planning-decoration/under-the-sea-parties) by The Party Rush · Kids' Birthday Party Planning & Decoration · On-site decoration across Bengaluru - [Mermaid Themed Birthday Decoration in Bangalore](https://mytribe.in/balloonsavenue_bangalore/kids-themed-party-decorations/under-the-sea-mermaid-parties) by Balloons Avenue · Kids' Themed Party Decorations · Decorates across Bengaluru; Visit store in Whitefield - [Under the Sea and Mermaid Party Decor](https://mytribe.in/partycipatepartyplanner/themed-kids-party-planning/under-the-sea-mermaid-magic) by Party-cipate Party Planner · Themed Kids' Party Planning · Takes projects across Bengaluru and its outskirts (Nandi Hills, Chikkballapur and beyond) - [Under the Sea Theme Birthday Decor](https://mytribe.in/myballoonselectroniccity/birthday-themed-party-decor/under-the-sea-explorations) by My Balloons My Party · Birthday & Themed Party Decor · Takes projects across Bengaluru; Visit store in Electronic City - [Under the Sea Mermaid Party Decor in Bangalore](https://mytribe.in/partycreatives.in/custom-themed-kids-party-planning/under-the-sea-mermaid-parties) by Party Creatives · Custom Themed Kids' Party Planning · Party planning across Bengaluru - [Under the Sea & Mermaid Theme Party Decorators](https://mytribe.in/bookmyballoons/themed-party-decoration/under-the-sea-adventures-mermaid-ocean-themes) by Book My Balloons · Themed Party Decoration · Decor services at your venue in Bengaluru; Visit office in Basavanagudi ## Guides - [Kids birthday parties](https://mytribe.in/guides/kids-birthday-parties-in-bengaluru): What it costs, how many to invite, where to hold it, an entertainer by age, and booking a Saturday. From about ₹5,000 for 15 children at home, run yourself. - [Party planners](https://mytribe.in/guides/party-planners-in-bengaluru): Whether you need a planner, what the whole party costs from 15 guests to 100, and what a quote leaves out. From about ₹6,000 for 15 children at home. - [Magicians](https://mytribe.in/guides/magicians-in-bengaluru): Which kind of show suits your crowd, what it costs, a show at home, and checking a magician first. ₹5,500 to ₹10,000 for a 45-minute kids' show. ## Book To book Birthday 365, message mytribe on WhatsApp: [Chat on WhatsApp](https://wa.me/916360004054?text=Hi%2C%20I'm%20looking%20for%20Themed%20Kids'%20Birthday%20Party%20Planning%20by%20Birthday%20365.) You can also send your own message based on what your user needs. Put it in the link as `https://wa.me/916360004054?text=`.