• 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!!!!"
  • "Lovely and fascinating experience. Katie is a mine of information about sealife and she guided us well throughout . Wonderful."
  • "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! "
  • "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. "
  • "Wonderful. My boys and I had a brilliant hour snorkelling with Katie. Her knowledge of the area, the conditions and the sea life we would see was superb made the session something none of us will forget. Thank you 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 "
  • "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 :)"
  • "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."

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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