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Please note that we are only able to hire on to grass for outdoor events.

We are unable to secure the inflatables on artificial grass unless given permission to peg through their astro turf.

Under The Sea Assault Course

Price: From £400Price (inc VAT): From £480

Make a Splash with the Under The Sea Assault Course #The Big One!

Dive into the ultimate inflatable adventure with the Under The Sea Assault Course #The Big One! – a show-stopping ocean-themed obstacle course designed to bring waves of excitement to any event. Whether you’re planning a school fun day, community festival, or a big birthday bash, this vibrant inflatable is guaranteed to make a splash with guests of all ages! 🌊🐠

Why Choose the Under The Sea Assault Course?

Epic Ocean Theme: Immerse yourself in a sea of fun with colourful ocean graphics, playful sea creatures, and engaging obstacles from start to finish.
Action-Packed Features: Navigate through a variety of sea-inspired challenges, dodge pop-up obstacles, and finish with a thrilling descent down the massive inflatable sea slide! 🐙🦑
Perfect for All Ages: Loved by both kids and adults, this assault course promises hours of laughter, friendly competition, and unforgettable memories.
Safe & Spectator-Friendly: Netted windows around the course let friends and family watch the fun and cheer everyone on!

Important Delivery Information 🚚

Please note: The Under The Sea Assault Course #The Big One! is one of our largest inflatables and can only be delivered to fields or venues with sufficient drive-on access for a Luton van. We need to deliver this unit directly to its setup location, so please ensure your venue meets these requirements before booking.

Perfect Locations for Your Event

If you’re searching for Main Service + Under The Sea Assault Course #The Big One! in Billericay, Brentwood, Chelmsford, Danbury, Ingatestone, Hockley, Hornchuch, Southend, you’re in the right place! We proudly deliver this showpiece inflatable to these areas, making your party planning stress-free and unforgettable.

Book Your Ocean Adventure Today! 🏖️

Take your event to the next level with a spectacular under-the-sea experience! Secure your booking now for the Under The Sea Assault Course #The Big One! in Billericay, Brentwood, Chelmsford, Danbury, Ingatestone, Hockley, Hornchuch, and Southend, and let your guests make amazing memories as they conquer the ultimate sea adventure!

Why not add this to our Under The Sea Castle, Sea Bounce Activity or Sea Slide

Our biggest assault course, which will really stand out at any type of event and will defiantly lure people to it.

Important Delivery Information ??

Under The Sea is a very large unit and will require 24ft in width, 58 ft in length

	Floor Space	Height
Unit Size:	55.8ft x 19.7ft	19.7ft
Slide Platform Height:		13ft

This will needed to be delivered directly to where it will need to go.

Vehicle access will be needed

	Suitable For Children
	Suitable For Adults

Suitable For

Indoors on Hard Surface
Outdoors on Grass
Outdoors on Grass (event)

This is a great asset course for all ages.

	Max Users @ 1m	20
	Max Users @ 1.2m	15
	Max Users @ 1.5m	12
	Max Users @ 1.8m	10

PIPA Tag Number:

Status:	Passed
Testing Body:	PIPA
Last Tested:	14 Jun 25
Expires:	14 Jun 26

Looking for more reasons on why to book with Mega Inflatables Ltd?

STOCK: We have are one of the largest inflatable hire companies in Essex and deliver to the home counties.
INSURANCE: All our equipment comes with £5 million public liability insurance.
STAFF: Full team who work 7 days a week.
EQUIPMENT: Offer unique pieces of equipment that you can't find elsewhere.
DEPOSIT: We only require a small deposit to secure your booking.
NO CANCELLATION FEES: No cancellation fees up to 24 hours before your hire date. For whatever reason other than weather we will not charge you a cancellation fee as long as we have 24 hours notice, otherwise we have the right to charge 100% of the hire value.
WET WEATHER: In the unfortunate event that the forecast states that it is going to be raining on the day of your party and you don’t want the inflatable, just call us within 24 hours of the booking day and we can try and reschedule your booking for you, please note your deposit is still non refundable but can be transferred to another booking up to 6 months from the date of original booking.
ESTABLISHED: We have been in the industry since 2007 and have built up a great name for ourselves.

To save money why not see if this can be added to a Packages

Why not add this to one of our packages or create your own package by calling one of our friendly party planners on Free Phone 0800 170 0059 or 07807 465 396

Select a Date Below to Check Availability:

December 2025

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