SPOILER ALERT: Don't read this until you've completed the quiz!
Ancient oceans
1. Coelacanth
2. Plesiosaur
3. Panthalassa
4. Duntroon
5. Trilobites
Deep blue culture
1. Hokusai
2. The Orca
3. Seaquest DSV
4. The Rime of the Ancient Mariner by Samuel Taylor Coleridge
5. Seals
6. P. Sherman, 42 Wallaby Way, Sydney
7. USS Indianapolis
8. Moby Dick by Herman Melville
Nautical numbers
1. 46
2. 10.5km
3. 400 degrees Celsius
4. 3.6 metric tonnes
5. Oarfish
6. 3000
7. 10%
8. The Dead Sea
Sea creatures
1. Echinoderms
2. Sea lions
3. Melon
4. Tardigrades
5. Leatherback
6. Galapagos
7. Seahorses
8. Bull shark
Davy Jones’s general knowledge
1. Self-contained underwater breathing apparatus
2. The bends
3. The 12 Apostles
4. Sunlit, Twilight, Dark, Abyssal, Hadal
5. Red Sea
6. El Niño