Author Archive

Present Ideas For Divers: Light Monkey Line Markers

Light Monkey, REM, Referencing Exit Marker, cave cookie, line arrow, line marker, direction arrows, reference exit marker, cave diving, presents for divers, underwater tags, waterproof tags, waterproof labels, underwater labels, Corey Mearns, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company

Line Markers are primarily used by cave divers as a visual and tactile reference on a guideline.

Light Monkey manufacturers three styles of line marker: direction arrows, reference exit markers and cookies. And you can see an example of each of these above, left to right.

Line arrows or directional arrows are used to either show the route back to the cave entrance, or to indicate the direction to the nearest air source, ie a different exit from the cave.

Light Monkey’s second line marker is called a REM or Referencing Exit Marker. This larger marker is used by survey teams to record data at key points in the cave. Underwater archeologists, scientific and wreck divers can also use it to mark data points too.

Our North American cousins believe a cave cookie disc resembles a biscuit, hence the nickname. This line marker is used to mark a specific spot on the line, ie jumps, gaps and junctions. Alternatively each member of the team can throw down a cookie on the line to help identify who is still in the cave, should the team get separated.

Light Monkey laser cuts their line markers from sheets of white Delrin®. This means that each marker is stronger and more durable when compared to a conventional plastic injection-moulded marker.

Generally a diver will write their name on their line markers (see example left). Light Monkey understands that the writing can fade over time hence they can engrave ID markers with words, letters or numbers. This is a really thoughtful present for an ardent cave diver. Simply purchase a minimum of 25 ID markers and let Light Monkey know what you want engraved, and they will do the rest!

Present Ideas For Divers: Divesangha Turtle Bag

Divesangha, reusable bag, one-time-use plastic bag, CVS Pharmacy, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company. DEMA ShowAt the end of October this year I was in Orlando for the DEMA Show. A friend of mine had also flown into town for this event and we agreed to meet up and enjoy a glass of wine or two. We were both tired and thought buying a bottle and staying in was a good option. I therefore duly popped into a CVS Pharmacy that was a couple of minutes walk from my hotel.

The USA has adopted a ‘custom’ – I can find no law about carrying closed alcohol containers – that purchased alcohol has to be placed in a brown paper bag. I don’t have an issue with this, the bag can be recycled, and I was quite content to walk back to my hotel carrying the bottle in my hand. But before I could say “no plastic bag“, the shop assistant had duly placed my ‘brown paper bag wrapped wine bottle’ into a plastic bag. I asked her “why did you put this into a plastic bag“? She replied “oh, one bag not enough? Let me double bag it for you“.

The assistant was supplying what she considered to be the best customer service she could. And for that I am grateful. I was however really horrified that her mindset considered it normal that a bottle of wine needed at least one, if not two plastic bags. It felt that they were being thrown at me like confetti.

I duly thanked her and said “please use this plastic bag for another customer, I do not need to use it“. She took the bag and the immediately threw it away because it had been ‘used’ by another customer.

Divesangha, reusable bag, one-time-use plastic bag, Rosemary E Lunn, Roz Lunn, The Underwater Marketing CompanyOn 5th October 2015 England followed Northern Ireland (2013), Scotland (2014) and Wales’ (2011) example and started charging a 5p levy for a single-use plastic carrier bag. Since this tax has come in the UK Government has reported that 83% few bags (over 6 million bags) has been issued in England from 7 April 2016 to 6 April 2017. This equates to each person using 25 bags (2016 – 2017) compared to 140 bags per year before the change.

This should make a massive difference to our plastic oceans. Dr Sue Kinsey from the Marine Conservation Society stated that “every year we survey our beaches, and last year (2014) we found over 5,000 bags over one weekend.

What are our options to reduce our single-use plastic bags? We can of course, use our plastic bags many times over. Or re-purpose an empty cardboard box from the supermarket and recycle it when we get home. We can also carry a wicker basket, but that tends to be inconvenient when we decide to grab some last minute essentials on our way home from work.

Divesangha, reusable bag, one-time-use plastic bag, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company, recycle, reuse, presents for scuba divers, DEMA Show 2017

Enter stage left Divesangha. When this Brit manufacturer launched in Spring 2014 they made a commitment. To locally and ethically manufacturer high quality products and not use plastic in their packaging. It is therefore logical that Divesangha has now produced a unique robust reusable bag to help wean everyone off their one-time-use plastic bag habit.

This lightweight, sturdy, fashionable Turtle’ bag neatly packs down into an integrated pouch allowing you to stash it in a coat pocket, day / rucksack, handbag or laptop case. When you reach the checkout till, simply pull it out and fill it up.

The 100% white Polyester fabric is washable. This is important because one of the criticisms that the plastic bag addicts state is that “a re-usable non plastic bag could potentially end up non-hygienic after many uses”. (Our grandparents never used to worry about this?!) There is no issue here. Just put your bag in the washing machine!

Whilst the practical Divesangha Turtle Bag is about the same size as an average carrier bag, it far outperforms its littering cousin. This stylish baby – priced at £15.00 – is constructed to conveniently handle much more weight!



Present Ideas For Divers: Oxygen Measurement For Divers by John Lamb

Oxygen Measurement For Divers, rebreather divers, oxygen sensors, John Lamb, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company, fuel limited sensors, storage of sensors, oxygen sensors, Paul Toomer, Mark Powell, Jill Heinerth, CCR safetyDo you have a rebreather diver in your life that you are particularly fond of?

Are you stuck for a present idea? If they don’t already possess a copy of John Lamb’s latest book, then why not pick them up a copy. It will help keep them safe(r) and provide them with accurate information on oxygen sensors.

“John Lamb’s book, ‘Oxygen Measurement For Divers’ is exactly what we have been waiting for. This book is a must read for any diver using any form of oxygen analyser, whether it is a simple oxygen analyser or in a complex rebreather.”
– Paul Toomer, Director of Diver Training, RAID

There are quite a lot of myths and misconceptions about oxygen sensors, hence earlier this year John Lamb published ‘Oxygen Measurement For Divers’. It is stuffed full of nuggets of information that every rebreather diver needs.

This book has been designed for divers to pick it up and dip into it. To check information. To look up answers.

It has achieved the happy balance of having a good technical aspect whilst remaining useful.

“This is an invaluable resource and should be compulsory reading for any rebreather diver.”
– Mark Powell, SDI / TDI / ERDI Training Advisory Panel

The explanations and illustrations are very clear and, even when describing complex principles, are structured in a very understandable way. Everything is covered from current limitation behaviour to best management practices for storage.

Oxygen Measurement For Divers, rebreather divers, oxygen sensors, John Lamb, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company, fuel limited sensors, storage of sensors, oxygen sensors, Paul Toomer, Mark Powell, Jill Heinerth, CCR safety

Lamb succinctly covers key topics, explaining in plain English the reasons for sensor failure:

  • the effects of temperature, humidity and pressure
  • sensor accuracy and stability
  • testing sensors
  • Do’s and Don’ts
  • how to determine the end of a life of a sensor
  • advice for looking after your sensors

“If you want to break through the mire of misinformation and be better informed about diving safety, this is a must-read book.”
– Jill Heinerth, explorer

‘Oxygen Measurement for Divers’ can be purchased in two formats. As a paperback, direct from Vandagraph for £15.00. Or, as a Kindle book for £7.50


Present Ideas For Divers: Fourth Element Water Bottle


“For years we thought the oceans were so vast and the inhabitants so infinitely numerous that nothing we could do could have an effect upon them. But now we know that was wrong. Surely, we have a responsibility to care for our blue planet?”
– David Attenborough, Blue Planet II


Fourth Element, refillable drinking water bottle, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company, plastic oceans, one time use plastic, Blue Planet II, present ideas for scuba divers

Last night the Blue Planet II concluded with some stark facts.

At present we use over 35 million plastic bottles a year in the UK, and we live in an area where tap water is safe to drink!

A simple way to reduce your consumption of one-time-use plastic is to stop buying bottled water. Instead keep a refillable bottle handy and save money too.

If you are out and about and not sure where to top up, this App will tell you where you can fill your bottle for free.

With Christmas on the horizon why not treat yourself and a loved one to Fourth Element’s 750ml water bottle? It is manufactured from BPA free recycled plastic and being priced at a mere £5.95, it won’t break the bank.

A refillable water bootle is good for the boat, your day pack, the office or the gym, and will help keep you hydrated in an environmentally friendly manner. And it is a better solution for our Blue Planet too!

Iwade School Cancels Planned Balloon Release

The Sittingbourne based Primary School in Kent recently commemorated Remembrance Day with a two minute silence to remember past and present service personnel.

Iwade School had also planned to release helium balloons as part of the event. However after receiving advice from Rosemary Lunn of The Underwater Marketing Company and reading environmental news articles, the school reviewed the event and cancelled the balloon release.

Instead 50 children along with their parents, took the balloon tribute decorated with poppies, and placed them inside ‘All Saints Church‘, Iwade to be part of the Remembrance Day Sunday service.

balloons blow, don't let go, Iwade School, biodegradable balloons, balloon release, The Underwater Marketing Company, Rosemary E Lunn, Roz Lunn, scuba diving news, Iwade School

The weighted helium balloon display at Iwade School designed to commemorate Remembrance Sunday

“We, like many others, would have followed the strict guidelines given to us from our supplier and believed they were all biodegradable and only by reading your information and seeing things in the local news we find that this is not entirely accurate. We thank you again for providing us with further information so we can, as you suggest, make different decisions in the future so we do not further threaten our environment.”
Caroline Mariner, Principal, Iwade School

Many balloon suppliers advise that so-called ‘biodegradable balloons‘ are made made from natural latex, hence they take the same time to decompose as an oak leaf. Gardeners are aware that whilst some leaves mulch down quite quickly, oak leaves are remarkably durable and can take up to four years to decompose. During this time, it is quite possible for farm, wild and marine life to ingest or choke on a biodegradable balloon and die.


KISS To Rescue The Hollis Explorer?

Mike Young, KISS Rebreathers, Hollis Explorer Rebreather, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company, scuba diving newsMike Young of KISS Rebreathers has just made an announcement on social media today, Thursday 15th November 2017.

Young confirms that KISS has been in talks with the Hollis family regarding a conversion kit for the Explorer rebreather.

This kit will take your Explorer to a full CCR. It is an all mechanical system so bad electronics are not an issue any more“, stated Mike Young.

It is believed that testing will begin next week.


WDHOF Reveals 2018 Class of Women Divers

USA based ‘Women Divers Hall of Fame‘ has today announced their class of 2018.

The six ladies – four American, two non-Americans – will be officially inducted into WDHOF on 24th March 2018 at the Beneath the Sea Awards Banquet in Secaucus, New Jersey.

The 2018 class includes a scientific diver, an underwater cinematographer, a marine conservationist, a diving educator and a diving journalist.

Patty Seery, Jeff Bozanic, Cristina Zenato, Our World Underwater Scholarship, Women Divers Hall of Fame, WDHOF, Long Beach Dive Show, The Scuba Show, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company,

Three hosts for the Our World Underwater Scholarship Society at the 2014 Scuba Show in Long Beach. From left to right WHODF 2018 Inductee Patty Seery, with rebreather author Jeff Bozanic and EUROTEK Diver of the Conference Award Winner, Cristina Zenato

In alphabetical order the 2018 class is:

Diana Hollingshead, PADI Instructor, PADI Habitat Diver Specialty, Oregon Coast Aquarium, AAUS Scientific Diver, Women Divers Hall of Fame, WDHOF, Beneath The Sea Show, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company

Diana Hollingshead: Instructor, Scientific Diver, Marine Biologist (USA)

Diana Hollingshead – a PADI IDC Staff Instructor, a DAN Instructor, an AAUS Scientific Diver, and co-owner of Eugene Divers Supply – promotes the need to stay current to maintain and further safe diving practices.

Hollingshead learned to dive in 1992. At the time of writing this article she has completed over 6,500 dives. She says her favourite place to dive is the beautiful, cold waters of the Pacific Northwest.

In 2000 she wrote the PADI Habitat Diver Specialty for the Oregon Coast Aquarium to train volunteer divers for the Aquarium. This outline is still used at the Aquarium today.

In 2008 Hollingshead established ‘Dive for a Cure’ to fund breast cancer research. To date Eugene Divers Supply has raised over US$560,000.00.

Hollingshead is a frequent school presenter and a volunteer at the Oregon Coast Aquarium, where she educates the public and volunteer divers.


Nathalie Lasselin, underwater cinematographer, Urban Water Odyssey, Women Divers Hall of Fame, WDHOF, Beneath The Sea Show, TDI, female rebreather diver, Fourth Element, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company,

Nathalie Lasselin: Explorer, Filmmaker, Speaker (Canada)

Nathalie Lasselin is a multi-award-winning underwater cinematographer based in Quebec. As a technical diver and instructor, she has filmed and explored deep wrecks, caves, and bodies of water in more than 50 countries, including the Arctic.

Nathalie shares her concerns for our fresh water resources, and actively promotes a better understanding of our planet through her films, articles and lectures. Her drive is to bring people together and empower them to have a better relationship with their environment.

Her latest project – Urban Water Odyssey – embraces all her goals and philosophy.


Sharon Kwok Pong, Mission Blue, Wild Aid, AquaMeridian Conservation & Education Foundation, Sylvia Earle, Women Divers Hall of Fame, WDHOF, Beneath The Sea Show, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company,

Sharon Kwok Pong: Marine Conservationist, Wildlife Protection Activist, Environmental Advocate (China)

Sharon Kwok Pong was born in Hong Kong where her father was a founder of Ocean Park. She has had a passion for ocean and wildlife protection from an early age.

Kwok Pong is a successful actor and model. She has therefore used her celebrity status in the Chinese community to shine a spotlight on shark finning and illegal wildlife trade at events, in media campaigns, in schools and through her artwork. Her on-camera conservation efforts and fluency in Mandarin and Cantonese have been pivotal in inspiring the next generation of Chinese to protect the ocean.

Sharon Kwok Pong is a Mission Blue and WildAid board member, and is Executive Director of the AquaMeridian Conservation & Education Foundation.


Erin Quigley, underwater photographer, Women Divers Hall of Fame, WDHOF, Beneath The Sea Show, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company,

Erin Quigley: Photographer, Educator, Speaker (USA)

Los Angeles based Erin Quigley believes that exceptional imaging inspires stewardship of the marine environment.

Quigley began shooting underwater in 1994. She has been teaching post-production techniques to the dive community since 2007. Today she is an award-winning photographer and one of the first Adobe ACE certified experts to focus specifically on post-production techniques for underwater photographers.

In 2010, Quigley left her career as an award-winning costume designer and television producer to create – this provides resources and training for underwater photographers.

When Erin Quigley is not speaking at conferences, she judges contests, leads trips, and teaches workshops worldwide. She also writes the ‘Imaging Techniques’ column for Scuba Diving magazine.


Patty Seery, DAN, Women Divers Hall of Fame, WDHOF, Beneath The Sea Show, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company,

Patty Seery: Educator, Women’s Advocate, Facilitator (USA)

When she joined Divers Alert Network (DAN) in 2008, Patty Seery, MHS, brought with her more than 30 years of experience as a health care provider/educator and CPR instructor/instructor trainer in addition to being a scuba instructor/course director.

Today Seery is Director of Training at DAN America. She is the architect behind the current DAN first-aid courses which are being utilised by divers of all varieties and internationally by multiple agencies.

Her educational outreach has supported the leaders of tomorrow as they participate in various scuba-diving internships and scholarship programs. In addition she encourages and mentors women of all ages in diving activities through training and travel.


Patricia Wuest, Bonnier Corporation, Scuba Diving Magazine, Sport Diver Magazine, diving journalist, Women Divers Hall of Fame, WDHOF, Beneath The Sea Show, Rosemary E Lunn, Roz Lunn, The Underwater Marketing Company,

Patricia Wuest: Editor in Chief at Bonnier Corporation and Ocean Conservationist (USA)

Patricia Wuest, editor-in-chief of Bonnier Corporation, has enjoyed a 20+ year career in dive journalism, working on the likes of Scuba Diving Magazine, Sport Diver Magazine and their related websites.

Wuest originally certified as a diver in 1993. Today she is the first female editor-in-chief on both magazines.

As the leader of the Dive Group team at Bonnier Corporation, she is passionate about using the magazines’ platform to support the dive industry’s efforts on all fronts – training, equipment, travel, and conservation – to spread the joy of scuba diving, to promote safe-diving practices and to reinforce the industry’s commitment to protect our water resources.