This is more of an aquatic pack 2 that aims for a spread of animals for it that would be useful to have with the water.
Animals
Pacific Walrus (Title Animal, something a lot of people would love to see)
Long Tailed Macaque/Crab Eating Macaque (A monkey that tends to dive and forage from the water, something that would be a unique thing there)
Capybara (They're a very interesting animal to see and common in zoos)
Atlantic Puffin (Often paired with penguins, and adds a different option that can blend with the penguins already in the game)
Alligator Snapping Turtle (Combined exhibit with the american alligator, and looks quite impressive)
White Pelican (While flight would be nice, a lot of these have clipped feathers in zoos...and are common in african savannah exhibits)
Japanese Giant Salamander (It's a relatively unique option for a species)
Exhibit
Hermit Crab (A new type of species and one that can be interesting despite being relatively common)
New Feeder
Shoreline Scavenger: Both a herbivorous and carnivorous option, both feeder and enrichment for species that often scavenge there.
Upgraded Feature
Aquatic Tunnels: Easier pathing for creating underwater tunnels, along with "glass" paths that allow looking through the floor of the path into exhibits. Also a few variants of tunnel designs with existing themes.
Animals
Pacific Walrus (Title Animal, something a lot of people would love to see)
Long Tailed Macaque/Crab Eating Macaque (A monkey that tends to dive and forage from the water, something that would be a unique thing there)
Capybara (They're a very interesting animal to see and common in zoos)
Atlantic Puffin (Often paired with penguins, and adds a different option that can blend with the penguins already in the game)
Alligator Snapping Turtle (Combined exhibit with the american alligator, and looks quite impressive)
White Pelican (While flight would be nice, a lot of these have clipped feathers in zoos...and are common in african savannah exhibits)
Japanese Giant Salamander (It's a relatively unique option for a species)
Exhibit
Hermit Crab (A new type of species and one that can be interesting despite being relatively common)
New Feeder
Shoreline Scavenger: Both a herbivorous and carnivorous option, both feeder and enrichment for species that often scavenge there.
Upgraded Feature
Aquatic Tunnels: Easier pathing for creating underwater tunnels, along with "glass" paths that allow looking through the floor of the path into exhibits. Also a few variants of tunnel designs with existing themes.