(1d) Seafood in digital form? (4, 7.) F _ _ _ F _ _ _ _ _ S.
(8a) A kind, that is, of attack. (6) _ _ R _ I _ .
(12d) Matter - of - fact effect of gravity on feathers. (4, 2, 5) D _ _ N _ _ _ _ R _ _ .
(15a) The era of clothing? Rubbish! (7) _ _ R _ _ G _ .
(27a) EFGIJK for Japanese theatre. (3) N _ _ .