I didn't see any existing threads about this new realm at SeaWorld San Diego, but Ocean Explorer is now open, home to the future SR2, Electric Eel.
At the moment it is home to about 3 rides it seems, which include a chairswing, something similar to elmo's flying fish, and Submarine Quest, aka Rocket Pods but without speed.
In my opinion its all kinda wasted space, the secondary entrance (used when the park is busy and during the construction of the main entrance) was removed, and the horse exhibit was also removed in order to allow this new realm of SWSD. Hopefully Electric Eel will help liven up the area, otherwise it seems kinda like a waste. Feel free to post your thoughts and opinions below