Possible Clues:

• State-sponsored gamble
• Random draw
• Draw tail of animal like an aquatic carnivore?
• Scratch-off game, e.g.
• Draw large aquatic mammal close to quay
• Gamble with fate - have a go at keeping direction
• Hard-to-win game
• Millionaire producer
• Draw Tarka beginning to yawn by lake ...
• The winner of the 1839 Grand National at Aintree