The Foxer

The 25 pictures in a cluster foxer are arranged in 5 discretely/discreetly themed clusters. Pictures in a particular cluster must be cardinally contiguous to be valid. For example, A1, B1, C1, D1, D2 is a possible cluster, unlike A2, B2, C2, D2, E3. To fully defox today’s enlargeable puzzle identify the themes and constituent images of all five clusters.

^ Click to enlarge

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SOLUTIONS

30 things wot you might find in, on, or over a river

1. MSS - MOSES (Dr. Breen)
2. SNGBT - SNAGBOAT (phlebas)
3. CHRLSMR LW - CHARLES MARLOW (Stugle)
4. LCK FRDPRFSSR - LECKFORD PROFESSOR (Little_Crow)
5. ZLL - ZILLE (unacom) or AZOLLA (Gothnak)
6. L GBM - LOG BOOM (Gothnak)
7. THLT TLG R YMN - THE LITTLE GREY MEN (Gothnak)
8. BLC KSP TPRNH - BLACK SPOT PIRANHA (Stugle)
9. FRS TFR - FROST FAIR (Dr. Breen)
10. RKT - RAKETA (Dr. Breen)

11. NDRWT RBRDG - UNDERWATER BRIDGE (Stugle)
12. TR KTHT TR  - TARKA THE OTTER (Dr. Breen)
13. FRD RCKBRBRSS - FREDERICK BARBAROSSA (Stugle)
14. HV RDM - HOOVER DAM (Gothnak)
15. TRN TGR - TRENT AEGIR (chuckieegg)
16. NSH - NEOSHO (Dr. Breen)
17. RRTR TL - ARRAU TURTLE (Gothnak)
18. FLCC - FELUCCA (ylla)
19. SWNP PR - SWAN UPPER (Dr. Breen)
20. RCTNFR RY - REACTION FERRY (Gothnak)

21. CMBNG - CUMBUNGI (sagredo1632)
22. GF FRHXM - GAFFER HEXAM (Gothnak)
23. MMRSNBP TSM - IMMERSION BAPTISM (Little_Crow)
24. BR DGSCR - BRIDGE SCOUR (phlebas)
25. LPS L ND - EEL PIE ISLAND (Dr. Breen)
26. SM LLNGHR NCLMNS - SAMUEL LANGHORNE CLEMENS (AFKAMC)
27. PN TNF - PONT NEUF (Gothnak)
28. GHRL - GHARIAL (Gothnak)
29. KRTHNG - KRATHONG (ylla)
30. TNFP NP PL - TIN OF PINEAPPLE (Dr. Breen)