The dolphin show is sold as a full day excursion during week days. It can also be combined with Palma sightseeing, Western Water park, Katmandu or a boat trip. Journey time is approximately one hour.
You can find full info on their website https://www.marineland.es/mallorca/en/
The nearest thing to swimming with the dolphins is this: https://www.marineland.es/mallorca/en/educacion-2/
Please contact us for prices with transport.