Ocean World is really two parts.
The Adventure Park is the main one, It has 5 main areas; dolphins, sharks, sea lions, birds, and tigers. Everything has an "encounter" that you can purchase. An encounter means you can interact directly with the animals (except the tigers of course). Depending the program you choose (Dolphin Swim or Encounter, Sea Lion Encounter, Shark & Stingray Encounter) there will be anywhere from 8 to 30 people in your group and 1 or 2 trainers to make sure you have a great time.
The dolphins & the sharks are probably the highlights of ocean world, but the sea lion show is great too! and the shark show is impressive.
The second part is the casino & 'Magical Nights Show'. the light show is very modern, the dancers are good looking and the caribbean rythms keep you dancing in your chair! then you can play in the casino or dance in the lounge & disco. It's a fun night out in Puerto Plata.