Marine resources -- Congresses 6 Oceanography -- 4 Research -- 3 Congresses -- 2 Management -- 2 Military relations -- 2 more ... Ocean engineering -- 2 Sea-power -- 2 Shipping -- 2 Aquaculture -- 1 Archipelagoes -- 1 Continental shelf -- 1 Economic aspects 1 Fisheries -- 1 Food chains (Ecology) -- 1 Foreign economic relations -- 1 Government policy 1 Government policy -- 1 International cooperation -- 1 Law of the sea -- 1 Marine biology -- 1 Marine ecology -- 1 Marine pollution -- 1 Marine productivity -- 1 Marine resources conservation 1 Marine resources development 1 Ocean energy resources -- 1 Petroleum in submerged lands -- 1 Security measures -- 1 less ...