Yes, MORAYS is a Scrabble word!

Letter values in Scrabble US: M 3, O 1, R 1, A 1, Y 4, S 1.

Is it a valid word?

MORAYS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

family of brightly colored voracious eels of warm coastal waters; generally nonaggressive to humans but larger species are dangerous if provoked

Also: moray eel.