To the UK, where lobsters have been one of the most valuable fish. However they are subject to fishing pressure in recent years and, if not managed sustainably, a stock collapse could happen. To ensure the seafood supply, scientists developed a sea-based method to rear baby lobsters to larger sizes before releasing into the wild. Take a look.

The current supply for European lobsters in the UK is at around only 4 percent of the potential demand. That's because years of overfishing and low survival rate of lobster eggs in natural environment. A Lobster Grower project led by UK's National Lobster Hatchery is helping to add to the supply in waters around the Cornish coast in Southern England. Scientists designed a sea-based container where juvenile lobsters hatched on-shore are able to grow to larger sizes.

DR CARLY DANIELS, MANAGER PRODUCTION, SCIENCE & DEVELOPMENT NATIONAL LOBSTER HATCHERY, CORNWALL "The lobster grower system allows us to rear animals out at sea in more natural systems, in systems that they rely on natural food sources - there's no feed input added whatsoever. You basically put the animals out at sea, they grow and then you produce a product at the end."

The juvenile lobsters are placed in individual cells in the meter-tall system, which is suspended in the water column at sea. Sientists say it mimics a lobster's early stage in the wild - where they usually find a safe crevice while foraging when food is close by. Prototypes of the Lobster Grower system were created by 3D computer-aided design and 3D printing.

DR CARLY DANIELS, MANAGER PRODUCTION, SCIENCE & DEVELOPMENT NATIONAL LOBSTER HATCHERY, CORNWALL "They're feeding on a lot of animals, a lot of different things; they've got the algae in the diet that are settling in the container and floating through the container. You can see he's very fit and healthy and the kind of animal that we want to be releasing back into the wild."

Over a 3-year period beginning in 2016, about 27 thousand juvenile lobsters were deployed in those containers. Daniels added that after numerous iterations and field-trials, the Lobster Grower apparatus has shown to be an effective way to raise lobsters to three years old. The primary mission of the National Lobster Hatchery is to ensure a sustainable population of the animals, but the system is being advised for commercial aquaculture.