My husband and I did this trip on a day visit to lanzarote. I was apprehensive as I suffer from seasickness however it was amazing. The staff were helpful and friendly, the submarine was far more spacious than we had imagined. The motion underwater was nothing for mr to have worried about and I felt fine. We saw loads of fish, very clearly, as well as ship wrecks and a stingray, some saw sharks but unfortunately we didn't. It was a very enjoyable, unique experience, worth the money.