Several new depth-focused cage designs have been developed to inhibit physical interactions between the positively phototactic sea lice and surfacing sea-cage Atlantic salmon (Salmo salar). As these cages become implemented at the commercial scale, sea-caged salmon are faced with a suite of new rearing environments and systems to adapt to. My PhD explores how (1) depth-modified cages will affect salmon buoyancy, and (2) whether we can utilise the learning capacity of salmon to facilitate their adaptation to novel environments. Georgia is now employed by PIRSA as an Aquatic Animals Health Officer.