16 Nov 18: New Grid and Clues. Old grid and Clues had a spelling error which has been rectified. Certitude solution remains the same so you can use either Pink (Old, with error) or Blue (new).
++++++FTF++++++ Congratulations Bunch of Barnes'
Identify the letters in the coloured boxes – unscramble them to find a themed film quote….
1 The only extant representative of the family Mitsukurinidae, a lineage some 125 million years old (6)
2 The short first name of the hero in the film picture (3)
3 The nickname given to the model shark in Jaws, reputedly named after Spielberg’s lawyer (5)
5 The world's largest shark (5)
6 The first name of the former talk show host and mayor of Cincinnati who had a cameo in Sharknado 3 (5)
7 The title of the shark movie starring Samuel L Jackson (4,4,3)
8 The surname of the author who wrote 'The Meg' (5)
11 The surname of fantasy author and "Game of Thrones" creator who made a much talked-about appearance in the third instalment of the so-bad-it's-good franchise and had a rather gruesome death: He was decapitated! (6)
13 The American TV programme that first spawned the expression ‘jumping the shark’ (5,4)
14 The nickname of the cheesy American actor who plays the hero’s father in the Sharknado series (3,4)
16 The name of Irish pop twins who appeared in Sharknado 3 (7)
17 The common name given to the 12 species of carpet sharks in the family Orectolobidae (9)
20 The type of skittish shark also known as Carcharhinus cautus (7)
24 The only type of shark that can live in both freshwater and saltwater (4)
25 The first name of the British Olympic diver who appeared as himself in "Sharknado 5. (3)
4 The first name of this Dr Who star who was the lead in Shark Attack 3 (4)
7 The smallest shark in the world (5, 7)
9 The first name of the composer of Jaws Main Theme (4)
10 The first name of "The Hulk" alum who got to flex his acting chops and utter his iconic "Don't make me angry! in Sharknado 3 (3)
12 Shark skeletons are made of this. (9)
15 The name of the Hanna-Barbera cartoon shark designed by Joe Ruby and Ken Spears (9)
18 The title of the prehistoric shark film starring a heroic Jason Statham (3,3)
19 Mr Shepard’s famous catchphrase Hell, __! (2)
21 The surname of the taller partner of a legendary duo who are regulars in Las Vegas, are famous for a bullet magic trick and who also cameoed in guess what! (4)
22 The surname of the author who wrote Jaws (8)
23 The first name of the singer who starred in the film: Mega Shark versus Giant Octopus (6) 26 The largest shark to have ever lived (9)
27 The romance book model who had a cameo in Sharknado 5 (5)
28 The actress who plays Tara Reid’s mother in Sharknado 3 (2,5)
29 The first name of the TV legend who appeared driving -- what else?! -- a Taxi in the second "Sharknado" movie. (4)
You can validate your puzzle solution with certitude.