Body Temperature RegulationTunaGillsBody TemperatureFishesAtlantic OceanTemperatureOncorhynchus mykissMediterranean SeaSkin TemperatureFisheriesSweatingHypothermiaCold TemperaturePyrogensMaineFeverHypothalamusHot TemperatureHypothalamus, AnteriorPacific OceanAnimal MigrationNight VisionDivingPerciformesGulf of MexicoSpatial AnalysisSwimmingCircadian RhythmPopulation DynamicsEcosystem