There's not much to "get" in this quest.
1. Talk to Porchay.
2. Go to Kenta and talk to him.
3. Get 40 Seahorse Tails from Cicle/Seacle.
4. Talk to him again to get Canned Whale Food.
5. Go back to Porchay and talk to him/her.
Unless there's something else you want to ask. :confused: