An aquaculture feeding apparatus (10, 110, 210, 310) comprising: a feed supply (16, 116, 214, 314) attached to a float of variable buoyancy (12, 212)； and a flexible element (21, 125, 221, 321) connected between the variable buoyancy (12, 212 ) float and a mount structure (20, 120, 220, 320), the flexible element (21, 125, 221, 321) being arranged to hang in an arc between the variable buoyancy float ( 12, 212 ) and the mount structure (20, 120, 220, 320). A feeding apparatus (10, 110, 210, 310) with adjustable buoyancy allows feed to be distributed to farmed aquatic animals (including fish, shellfish, molluscs, salmon, etc.) at a variable depth within the water (212B). A method of supplying feed in aquaculture comprises adjusting the buoyancy of such a float (12, 212 ) so as to adjust the floating depth of said float (12, 212 ) while the distribution of weight of a flexible element (21, 125, 221, 321) connected in an arc between the float (12, 212 ) and a mount structure (20, 120, 220, 320) is changed.
