A pack (300) containing feed for aquatic creatures comprises a cassette (302) for operation with an automatic feeder (150), said cassette comprising a cassette body, said cassette further comprising a plurality of discrete feed compartments (306), each feed compartment having an aperture (314) located in the base of said cassette, said pack further comprising a quantity of removable tape (316) covering a succession of said discrete compartments, said tape being arranged to block the passage of feed out of the compartment when covering said apertures and allowing feed, in use, to fall out of said pack as a portion of said tape covering said apertures is peeled back； said removable tape being so attached to said cassette body as to separately hermetically seal the aperture of each compartment.
