Credit: Huseyn Ek (Akuakare, Turkey)
The photos are taken in some tuna farms in Turkey whereas the bluefin tuna (Thunnus thynnus) is the species of choice. These cage farms are located in Alanya and Lzmir in Turkey. Tunas required for farming are collected from the nature and stocked in these cage in which they are grown for 6-8 months before harvesting upon reaching weights that could range from 150-600 kg/piece. The harvested biomass could range from 200 – 400 tons/cage having in consideration that the shown cages are of 66 meters in diameter with a circumference of 207 meters. Fish in cages are fed on big sardines, mackerels and other low market value fishes. These cages are manufactured to resist the worst open sea conditions while having sufficient elasticity and durability in such weather.