Manly beach and sea

123456789101112
Across
  1. 3. creature that floats and has blue stinging cells
  2. 4. conical shell that can hold on tight to rocks
  3. 6. it sounds like it should be in the night sky, but I like water
  4. 8. don't mess with this creature's pincers
  5. 9. Manly has a small colony of these cute aquatic birds
  6. 12. dangerous blue rockpool creature
Down
  1. 1. NSW's state fish emblem
  2. 2. cephalopod that can change colour to hide
  3. 5. apex predator with marking that look like a saddle, named after Sydney Harbour
  4. 7. a horse that likes water
  5. 10. I have lots of spikes
  6. 11. I swam the EAC with nemo, I am a cool dude