• Snorkel Instructor

    BSAC Qualified | Registered BSAC Snorkel Centre

  • Speaking and Presenting

    BBC | Kendal Mountain Festival

  • Seal Picture

    Conservationist

    BDMLR |MBMG | CWT

WELCOME TO TONIC OF THE SEAWELCOME TO TONIC OF THE SEA

BBC-featured marine wildlife guide, BSAC snorkel instructor and registered BSAC snorkel centre, star of the BAFTA-nominated film 'Tonic of the Sea' and award winning conservation film 'Green Ocean Gold'.

Join me on a Snorkel Safari!

Join me Katie Maggs @tonicofthesea, a BSAC qualified snorkel instructor at low tide for a wildlife Snorkel Safari!

What people are saying!

  • "An amazing experience for both of us - Thank you for sharing your knowledge and passion of the sea and for making us feel safe and comfortable in the water. We saw so much we were not expecting to and we can’t wait to go again. Thanks again and hope to see you soon - happy bubbles!!!!"
  • "Thank you so much for a wonderful family experience that we will treasure. Katie is so friendly, kind and inclusive as well as passionate and knowledgeable. We had a brilliant morning. Thanks so much, it was perfect! x"
  • "Had the most amazing experience snorkelling with Katie. She is so knowledgeable on the beautiful plants and animals and her enthusiasm is catching. This is a must do as it was like being in an underwater fantasy garden, the colours of the plants and sea life was spectacular. Thanks Katie you are brilliant. "
  • "I think you already know this, but... I had a brilliant time!! I wouldn't have even got in if it wasn't for you, and now I can say I'd happily go in without tutoring. It's amazing what an hour (well, a bit more thanks to your generosity!) can do for confidence in the water. Thank you."
  • "Thank you so much Katie for taking us snorkelling along the Cornish coastline. We had an absolutely awesome time and can't wait to come back to explore some more!! Thank you for showing us the ropes and for taking us to some incredible locations. Look forward to seeing you again soon :)"
  • "Our first time snorkelling and what an amazing experience it was, we both enjoyed it so much. Katie who runs the snorkelling experience is lovely and you can learn so much from her. Would recommend booking a snorkelling experience with Katie. "
  • "Katie provided a warm welcome and clear explanation of what the introductory session would entail and what a safe environment it was for a ‘taster session’. The experience was magical, seeing the many different types and colours of kelp, spider crabs, starfish, sand eels and various other fish. A truly memorable experience. "
  • "An experience I will never forget! Katie made me feel calm and confident with the equipment, techniques and the areas we snorkelled in. I learnt so much and feel I can now go out snorkelling alone and find under water treasures. Thanks Katie! Highly recommended"
  • "Our time in the water with Katie was simply magical! She is the most welcoming and loveliest instructor, who’s completely attentive to your needs. The experience itself was incredible, and even though I’m a complete snorkelling novice I was surprised how quickly it took me to feel at ease and simply enjoy the wonderful underwater world around us! We can’t wait to get back in the water! "
  • "Absolutely lovely, magical Snorkel, the seaweed is like swimming through a fantasy world. Katie found us spider crabs, beautiful jellies and lots of wrass. So good to be snorkelling after nearly 4 years of not diving. "

NEW: I am now offering snorkelling as part of wellbeing retreats

My Image

My film 'Tonic of the Sea' by filmmaker Jonathan J Scott highlights my recovery from anxiety, myaclonic seizures and stress related burnout through daily dawn swimming in the sea.
  • compass jellyfish

    Follow Me @tonicofthesea

    Follow my journey of snorkelling, rockpooling and beachcombing whilst learning about the wonders of our Cornish marine life on Instagram, Youtube, TikTok and Facebook @tonicofthesea.

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