Atlantis "snorkel with Dolphins" vs "deep water interaction with dolphins" - what's the difference?

[erincherish]

We are doing the 4 night Bahamas in Sept on the Dream. DD (14) & I would like to go to Atlantis and do one of the dolphin swims. Does anyone know the difference between:

1. Atlantis Aquaventure and Snorkel with Dolphins (N87) $299
And
2. Atlantis Dolphin Cay Deep Water Interaction & Aquaventure (N49) $329

Thank you!