Under the Sea Birthday Decoration | Ocean Theme 1st Birthday for Boys Dive into a world of wonder with this ocean-themed first birthday party setup, perfect for baby boys! Featuring sea creatures, pastel balloons, adorable dolphin cutouts, a stunning mermaid tail cake, and custom name lighting, this under-the-sea décor brings an aquatic adventure to life. Ideal for parents searching for 1st birthday decoration themes, underwater party ideas, or nautical birthday backdrops. 🐬 Perfect For: Ocean/sea-themed birthday parties Baby boy's first birthday decor Nautical-themed cake table setup Indoor beach party ideas for kids 🎂 Customize with marine life elements like seahorses, turtles, whales, and more! #OceanThemeBirthday #UnderTheSeaParty #1stBirthdayDecorIdeas #BoyBirthdayTheme #BabyBoyBirthdayBackdrop #SeaThemePartyDecor #NauticalBirthdayIdeas #AquaticPartyTheme #BirthdayDecorForBoys #WhaleAndDolphinPartyDecor