Land-based aquaculture -- it’s a vexed and much-debated subject in the fish farming industry. Over the years, many have attempted to build up profitable operations, and just as many have failed.

But when I attended EuroShrimp in Bremen last month, there was a sense of excitement in the air, and speakers and delegates of the two-day event delivered an important message: "we can."

Some called land-based shrimp farming -- in recirculation aquaculture, or biofloc systems -- the future of European aquaculture.

The list of attendees clearly showed interest is growing.