Abstract: A method for aquaculture including a fastener that allows for a float to be easily detached from and securely reattached to an aquaculture cage. The method provides multiple toolless approaches to submerse an aquaculture cage that is buoyant in water when attached with a fastener to a hollow float defining a volume filled with air. The method includes in a first approach, detaching the hollow float from the aquaculture cage by releasing the fastener without using a tool to allow the cage to sink in the water and in a second approach, with the hollow float attached to the aquaculture cage, at least partially filling the float with fluid to fully submerse both the cage and the hollow float beneath a surface of the water.