- Physics and chemistry of the seas
- Salts in the sea
- Light in the sea
- Water and other cycles
- Tides
- Waves
- Currents and circulation
- Monsoons and the seas
- El Niño : Oceanic aspects
- Geology of the seas
- Sundaland
- Sea level changes
- Geological evidence: Core samples
- Coastlines
- Moving sands
- Marine biodiversity
- Plankton
- Seaweeds
- Seagrasses
- Starfish and sea cucumbers
- Hard corals
- Soft corals
- Molluscs
- Squid, cuttlefish and octopuses
- Seashells
- Worms
- Barnacles
- Crabs
- Prawns
- Fish
- Sea snakes
- Sea turtles
- Sea birds
- Sea mammals
- Marine and coastal ecosystems
- Estuaries
- Sandy beaches and rocky shores
- Sand and mud flats
- Mangroves
- Coral reefs