• 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!

  • "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."
  • "Such a lovely morning- it was so interesting and so beautiful and right from the start Katie is so warm and welcoming and reassuring. She is absolutely the perfect person to be showing people this gorgeous world under the waves:) xx"
  • "Amazing experience! Opened up a whole new world beneath the surface! Katie is extremely knowledgeable and has hugely increased my confidence, changing my entire approach to snorkeling and turning it into such a rewarding experience. Whether you are experienced or a novice I cannot recommend enough. Thanks again Katie."
  • "The snorkel safari was brilliant a great experience for the whole family. We had no idea there was so much to discover in the water around mount’s bay… so many sea creatures and beautiful colours you felt like you were discovering a secret world. Katie is a fantastic guide she is so knowledgeable and enthusiastic we learnt so much from her. We cannot wait to book again Thanks katie "
  • "From start to finish, our snorkelling experience was perfect. I must admit, I was a little apprehensive but Katie made me feel comfortable and calm. I went along with my 10 year old daughter and Katie kept an eye on her while I was gaining my confidence! We learnt so much about the sea, snorkelling and the beautiful seaweeds. It was a truly magical experience with a wonderful lady. Thank you! xx"
  • "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! "
  • "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"
  • "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. "
  • "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"
  • "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. "

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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