Lungfish

What Lungfish does

Lungfish Dive Systems Limited is a UK-based manufacturer of high-performance closed-circuit rebreathers (CCRs) and related diving accessories, founded in 2008 and headquartered in the Cambridge area. Its flagship product is the ORCA v6, a compact electronically and manually controlled CCR measuring 60 x 40 x 20 cm at approximately 18 kg diving weight, certified to EN 14143:2013 for use to 100 metres sea water in cold water and classified as Category III Personal Protective Equipment. Differentiated technical features include a proprietary CO2 monitoring system proven in naval use, self-checking electronics with a unique calibration cap, flood-resistant sensor architecture, instantly adjustable counter lungs, and the GEMINI gas switch block that allows gas changes without removing the mouthpiece. Each unit is hand-assembled and tested in the UK.

The company monetises through four streams: custom-configured ORCA v6 hardware sales on a quote basis (only to divers who have completed unit-specific courses with recognised diving agencies), component and accessory e-commerce sales (oxygen sensors, cylinders, outer casings, mask straps priced £25-£330), paid servicing of units, and instructor-led training delivered through a global network of ORCA-certified trainers. Customer segments span technical divers (primary), diving instructors and trainers (primary), professional/commercial divers (secondary), and recreational divers (secondary). Marketing is multi-channel, combining a website with e-commerce, YouTube, Facebook, and Instagram, independent video reviews on outlets such as Scubaverse.com and Martin Robson Diving, dive show participation, and email marketing. In December 2024, the assets and technologies of Lungfish Dive Systems Limited were acquired by Highland Light Ventures Limited, which subsequently re-certified the ORCA V6 in the UK and EU circa 2025, established a new physical shop in Willingham, Cambridge, and is taking orders for ORCA batch 26.1.

Name

Lungfish

Legal name

Lungfish Dive Systems Limited

Website

https://lungfishdivesystems.com

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

1–10 employees

Short description

Lungfish designs and hand-assembles compact closed-circuit rebreathers and gas-switching accessories in the UK, selling primarily to certified technical divers, diving instructors, and professional divers through direct sales and a global instructor network.

Ownership category

akta.pro rank

Product category

Technical Diving Equipment

NAICS

Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511)

SIC

Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Diving & Snorkeling Retail (Scuba Gear) (CRAMAIAF)

akta.pro secondary industries

Dive Centers & Scuba Training (PADI/SSI, certifications) (THAAAIAA), Life-Saving Appliances & Safety Equipment (Davit Systems, Lifeboats, Firefighting) (IMAJAIAG)

Keywords

• Closed circuit rebreathers
• Diving equipment manufacturing
• Technical scuba gear
• Underwater gas switching
• Rebreather safety systems

Headquarters

HQ city

Cambridge

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales

Revenue model

1. Rebreather Sales: Primary revenue from ORCA v6 closed-circuit rebreather sales. These are customized to customer diving preferences with various configuration options. Pricing is quote-based, requiring customers to fill in contact forms specifying their ORCA configuration.
2. Component Sales: Sales of replacement and accessory components including Oxygen Sensors (£108), Gas Switch (£330), Outer Casings (£255), Cylinders (£90), and Mask Retaining Straps (£25). Sold through e-commerce shop.
3. Servicing: ORCA v6 servicing provides ongoing revenue from maintenance and service requirements. Customers download and complete a Service Form, email it, and include a printed copy with their machine when shipping.
4. Training: ORCA v6 instructor trainers and instructors are located worldwide. The rebreather is only sold to properly qualified divers who have completed unit-specific courses with recognised diving agencies.

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels9 records

Core offering

Lungfish manufactures compact, lightweight closed-circuit rebreathers (CCRs) for technical and recreational scuba diving, with the ORCA v6 as its flagship product. The unit integrates proprietary CO2 monitoring, self-checking oxygen sensor electronics, flood-resistant design, and instantly adjustable counter lungs into a CE/UKCA-certified Category III Personal Protective Equipment system tested to 100 metres sea water. The company also produces the GEMINI Switch Block for in-dive gas switching, custom oxygen sensors, steel cylinders, outer casings, and mask accessories, alongside ORCA v6 servicing and qualification-gated sales through certified dive instructors.

Product overview

Lungfish Dive Systems manufactures high-performance diving equipment, primarily closed-circuit rebreathers (CCR) and related accessories. The core product is the ORCA v6 rebreather, a compact diving system designed for both recreational and technical/professional use. Supporting products include the GEMINI Switch Block for gas switching, proprietary oxygen sensors, outer casings, steel gas cylinders (M18 and M25 variants), and mask accessories. The product line is unified around the ORCA v6 platform with add-on modules and replacement parts, all designed and hand-assembled in the UK.

Differentiator

Problem solved

Functional benefit

Brands

• ORCA v6: A compact, easy-to-use rebreather offering extended duration dives, excellent freedom of movement, stable buoyancy and unique safety features. CE/UKCA certified and tested to 100msw in cold water at 4 degrees C.
• GEMINI

Products and services

• ORCA v6 Rebreather A closed-circuit rebreather (CCR) offering extended duration dives, excellent freedom of movement, stable buoyancy and unique safety features in a compact, easy-to-use package; CE/UKCA certified as Category III Personal Protective Equipment and sold only to divers who have completed a unit-specific course with a recognised diving agency.
• GEMINI Switch Block A gas switch device that allows divers to switch between gas supplies without removing their mouthpiece, full face mask or helmet, with a secure mechanism preventing accidental switching and a robust handle operable with gloved hands; available for sale only outside the UK and Europe.
• Lungfish Oxygen Sensor Custom-made oxygen sensor with extra thick gold-plated pins for connectivity, plugging directly into the head with no exposed wiring; extended sensor body allows a watertight seal at the base.
• Outer Casing - Black Only Outer protective casing for the ORCA rebreather in black finish.
• Outer Casing - Black and Silver Outer protective casing for the ORCA rebreather in black and silver finish.
• 2ltr Cylinder - M25 2 litre steel cylinder with M25 valve for gas supply in rebreather systems, 200 bar rated.
• 2ltr Cylinder - M18 2 litre steel cylinder with M18 valve thread for gas supply in rebreather systems, 200 bar rated.
• Mask Retaining Strap (Slap Strap) Mask retaining strap with honey comb interior for comfort, canvas outer for durability, elastic straps with easy adjustment, and embroidered Lungfish logo.
• ORCA v6 Rebreather Servicing Maintenance and servicing for the ORCA v6 rebreather, initiated by customers downloading and completing a service form which is emailed to Lungfish and included with the machine when shipped in for service.

Quantifiable outcome

• Scrubber duration of 3+ hours with 2.2Kgs of absorbent
• +3 more outcomes

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Poseidon Diving Systems: Swedish manufacturer of diving equipment including the Discovery and Cigar closed-circuit rebreathers. Direct competitor in the CCR space with overlapping technical/recreational segment and similar CE/EN 14143 testing heritage.
• JJ-CCR: Slovenian maker of high-performance closed-circuit rebreathers aimed at technical and cave divers. Closest comparable to Lungfish on hand-built CCR production, premium price point, and instructor-based sales model.
• AP Diving: UK-based manufacturer of technical diving equipment including the Inspiration and Evolution rebreathers. Competes head-to-head with Lungfish in the home UK technical diving market and shares the British hand-built manufacturing heritage.
• rEvo Rebreathers: Hungarian manufacturer of closed-circuit rebreathers including the rEvo III and mini rebreather lines. Direct competitor serving the same technical diving customer base with similar training-gated sales model.
• Shearwater Research: Canadian manufacturer of dive computers and rebreather controllers (Petrel, Nerd, Peregrion) used in many third-party CCRs. Direct competitor in the electronic/control layer of rebreathers and adjacent controller supplier to diving OEMs.
• O'Three: UK-based manufacturer of recreational and technical diving equipment. Comparable UK hand-built manufacturing origin and overlap in targeted diving customer segments, though with a broader SKU mix than Lungfish.

Broad incumbents

• Scubapro: Global diving equipment brand owned by Johnson Outdoors with a wide portfolio across regulators, BCDs, and dive computers. Overlaps Lungfish on the broader diving-gear shelf but does not currently field a comparable dedicated CCR unit.
• Aqua Lung: Global diving equipment manufacturer with roots in regulator and open-circuit systems. Competes indirectly via its broad dive-gear portfolio and brand reach among the same diving population that buys premium CCRs.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@rebreathertv
• Facebookfacebook.com/divelungfish
• Instagraminstagram.com/divelungfish
• LinkedInlinkedin.com/company/lungfish-dive-systems-ltd-

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Lungfish