ACROSS

1. Michael Jackson’s monkey (7)
8. SMB featured on Noel’s House Party (4)
10. Imbibe (5)
11. Opposite of a big fish (5,4)
12. Freddy or Flipper? (7)
15. One mollusc that you won’t find eating your lettuces (3,4)
17. A family of gender-bending fish (6)
19.  Beefcake bivalves (7)
21. Shelf-shentred shefood (21)
22. Navy name for the smallest rooms on a vessel (5)
23. Fan type thing that drives your boat along (9)

DOWN

2. Al fresco meal, also a plastic doll (6)
3. Don’t forget to pack one of these for the surface interval! (5)
4. Foamy white wavetops (5,6)
5. Bivalves you may find in your paella or gripping your leg (5)
6. Part of a boat where divers go when it rains (10)
7. Overnight accommodation (3,3,9)
9. Stinky bit of boat, often used for storing dive bags overnight (6)
12. Arch enemy of catfish (7)
13. Stagger up this after a dive (6)
14. You can’t see anything when plankton does this (5)
16. Where you’ll often find divers several metres deep (on dry land) (3)
18. The hook on a boat (6)
20. Flaccid alien?