我如果攻打海洋里面的海军，岛屿上的陆军和空军可以参与防御吗？
不行
Air Units:
Each attacking air unit can participate in the sea battle or the attack on the coastal territory; it cannot do both. The attacking player must declare which air units are involved in each part of the attack and cannot change their assignments later. At the end of the amphibious assault, all aircraft remain in place; they will land during the Noncombat Move phase.
Air units defending in a territory can only fight in that territory. They cannot participate in the sea combat.
