Structural, Functional, Behavioural adaptations

Is the following a structural, functional or behavioural adaptation? A turtle shell

Is the following a structural, functional or behavioural adaptation? Octopus changing colour

Is the following a structural, functional or behavioural adaptation? When fish swim in schools

Is the following a structural, functional or behavioural adaptation? Male seahorse pouch

Is the following a structural, functional or behavioural adaptation? Turtles getting rid of excess salt through glands in their eyes

Is the following a structural, functional or behavioural adaptation? Courtship- mantis shirm dancing to attract a mate.

Is the following a structural, functional or behavioural adaptation? Blow hole on a whale

Is the following a structural, functional or behavioural adaptation? Sea birds getting rid of excess salt through thier beaks

Is the following a structural, functional or behavioural adaptation? Migration