They saw a dolphin as they were leaving the bay.
The boat dropped them off at a platform and left. There were steps to go up to the top of the island and steps to go down to the water.
They went snorkeling in the cove, but it was very cold - even with their wetsuits on. They brought frozen peas to lure the fish, but they didn't see as many fish as they did in San Diego last year. Dave was talking to a guy whose friend went to Catalina recently and he said there weren't as many fish there as usual either. And the water was colder than usual for this time of year, too.
Then they climbed up and explored the island. There was a lighthouse and a building used by the Navy years ago, but otherwise there wasn't anything up there. Not even trees or bathrooms.