Endless Ocean Blue World. What do you think about the ending?

[pots555]

So, you are the person for two quick questions:

1. When can I see the blue bird in the north? They talk about a curtain.
2. How do you become friends with dolphins. I have only two. The first one came with
the diving company and I rescued the second one from the iceberg. I don't know how
to get them in my training facility.

THanks!