Chinese online retailer JD.com now has 200 million active users, and with the Chinese middle class growing and demanding more quality seafood, the opportunities are mind-boggling.

"In China, online is the first choice for buying things," JD.com Sourcing and Procurement Manager Frank Huang said at the recent GOAL conference in Dublin.

The key for JD.com -- and the key for future expansion of e-commerce development around the world -- has been its investment in logistics.

"Five years ago we could not provide seafood to our customers," Huang said.