 It is possible, however, that because mature females are larger than males and immature females, they will have a reduced buoyancy and therefore reduce the energy needed to capture "Asellus".Also, mature females have a larger abdominal size, which could support a larger air bubble and allow them to remain submerged for longer.However, if the water depth deepens, mature females will switch and spend more time at the surface and not feed on "Asellus", as the deep water will increase the amount of energy needed for diving and staying submerged.