They have been doing small updates and changes to animal exhibits and habitats over the past year or two that have been positive moves to reinforce their original sea life focus. Things like the introduction of the hammerhead sharks to the shark encounter:
The young male sharks are named Dutch and Dillion.
mynews13.com
Overall they are trying to diversify, but they understand that the animals are still a big part of the draw to the parks.
I think this particular addition will bring life back to the penguin exhibit that has been missing since the old ride closed, and I think it's a positive addition to the park.
I saw a lot of complaints about how passholders with little kids don't think a 42" height requirement is "family friendly" but there is an array of rides in Sesame that are already filling that roll. I still think the next addition will be at the Wild Arctic building and (hopefully) be a Sesame dark ride, assuming that any exclusivity contract for Port Aventura has lapsed (it will be 5 years in 2024). We'll see...