Walkthrough: Directly inside Seaward Cave is where you will find Nebby. However, it is also where you will again run into the Ultra Recon Squad. As they continue their research, they will desire to battle you to see just as strong you are, as well as to see what battling is all about. After defeating them, you will return Nebby to Lillie.
Island Scan Pokemon:
Squirtle
Wild Pokemon:
Initial Pokemon (Levels 9-12): Smoochum(30%), Psyduck(30%), Zubat(20%), Delibird(20%)
SOS Pokemon #1 (Levels 9-12): Jynx, Psyduck, Zubat, Delibird
SOS Pokemon #2 (Levels 9-12): Smoochum, Psyduck, Zubat, Delibird
SOS Pokemon #3 (Levels 9-12): Happiny, Psyduck, Zubat, Delibird
SOS Pokemon #4 (Levels 9-12): Smoochum, Psyduck, Zubat, Delibird
Surfing Pokemon (Levels 15-18): Zubat(55%), Seel(30%), Delibird(10%), Psyduck(5%)
Surfing SOS Pokemon #1 (Levels 15-18): Zubat, Seel, Delibird
Surfing SOS Pokemon #2 (Levels 15-18): Zubat, Seel, Delibird, Psyduck
Fishing Pokemon (Levels 10-17): Magikarp(90%), Barboach(10%)
Fishing SOS Pokemon #1 (Levels 10-17): Gyarados, Whiscash
Fishing SOS Pokemon #2 (Levels 10-17): Magikarp, Whiscash
Fishing SOS Pokemon #3 (Levels 10-17): Magikarp, Barboach
Fishing Bubble Spots Pokemon (Levels 10-22): Barboach(60%), Magikarp(40%)
Fishing Bubble Spots SOS Pokemon #1 (Levels 10-22): Whiscash, Gyarados
Fishing Bubble Spots SOS Pokemon #2 (Levels 10-22): Whiscash, Magikarp
Fishing Bubble Spots SOS Pokemon #3 (Levels 10-22): Barboach, Magikarp
Trainers:
Ultra Recon Squad Dulse - Level 13 Furfrou
Items:
Escape Rope - Near North Entrance
Heal Ball - South of Entrance
TM79 - Across Water Near Entrance
Super Potion - Left Wall
Star Piece - In Rock Near Super Potion
NeverMelt Ice - Middle of Cave
Expert Belt - On One Path
Stardust (Hidden) - Between Batch of Rocks
Star Piece (Hidden) - In Rock Found In Small Alcove