The back of the Flying Shark box says:
HOT FROM THE ARCADES
Flying Shark is the definitive conversion of this shoot-em-up, chart-topping classic from Taito. Develop your strategy as you face swarms of enemy planes, tanks, gun emplacements and a host of sea-borne craft as you bomb, blast and battle your way into arcade history.
The instructions were supplied in a small A5 sized fold out booklet.
Flying Shark was released in a standard double-cassette sized plastic jewel case for the 8-bit cassette versions, and the 8 and 16-bit disk versions were released in a 5.25 inch crystal case.
The Flying Shark advert published in the UK didn't mention the Amiga conversion.