Under the Sea Bouncy Castle Hire in Nottingham, Derby, Leicester & Beyond

Dive into a world of aquatic adventure with our Under the Sea Bouncy Castles – a collection of ocean-themed inflatables that are perfect for children’s parties, school fun days, and seaside-inspired events. At Marshall’s Castles, we’ve created a colourful and exciting range of bouncy castles that capture the magic of the deep blue sea, full of playful characters, bright graphics, and interactive features.

Children will love bouncing among the sea creatures on our Fishy Fun Bouncy Castle, or embarking on a pirate adventure with the Jolly Roger Bounce n Slide Bouncy Castle. These inflatables are packed with colour and energy, bringing your ocean-themed party to life. If you're planning something extra special, the Mermaid Bounce & Slide Bouncy Castle adds a touch of underwater sparkle, combining gentle bouncing and sliding fun in one magical inflatable.

For those planning a bigger event or school field day, our Ocean Fun Run is a fantastic inflatable obstacle course with plenty of space to climb, crawl, and dash through marine-themed challenges. And for the classic pirate feel, our Pirates Cove Bouncy Castle offers vibrant graphics and high-energy fun that kids can’t resist.

We deliver our under the sea inflatables across the East Midlands, including Nottingham, Derby, Leicester, Sheffield, Mansfield, Chesterfield, and Loughborough, with free delivery to many locations. Every inflatable is cleaned, safety-checked, and set up by our professional and friendly team — because your child’s safety and enjoyment are always our top priorities.

When you choose Marshall’s Castles, you're booking with a trusted, family-run business that has been delivering fun since 2010. We’re known for our reliability, great prices, friendly service, and the highest quality inflatables available in the UK. We’re also fully insured, with all equipment tested to RPII and PAT standards.

Need help choosing the perfect inflatable? Want to check availability or make a booking? Feel free to get in touch via our contact us page – or give us a call on the number at the top of this page. We’re always happy to help.

Let your little ones make a splash at their next party with an Under the Sea inflatable from Marshall’s Castles – where safety, quality, and fun all come as standard.