It's still winter, is it worth visiting it? Or still frozen?

It's worth a visit. The aquarium is inside, only the seals spectacle is partially outside, and it can be seen still in cold winter with no problem.

It is worth going even though its winter. You may have to wait on line for tickets especially on a weekend.

Definitely worth a visit, while it's still cold most outside exhibits are open

The aquarium is an inside venue other than the sea lion show