Metal-containing polymerizable monomer and manufacturing method therefor

[Problem] To provide the following: a metal-containing copolymer that is useful in the preparation of an antifouling-paint composition that does not produce coating defects and maintains excellent antifouling performance for a long period of time even when stationary; and a metal-containing polymerizable monomer from which said metal-containing copolymer is obtained. [Solution] A metal-containing polymerizable monomer represented by general formula (1) or the like. In said formula, M represents a divalent metal, R 8 and R 9 each independently represent H or CH 3 , R 1 and R 6 each independently represent a C 2 or C 3 hydrocarbon, n represents an integer from 1 to 20, and p represents an integer from 0 to 20. Also, a method for manufacturing said monomer by reacting an inorganic metal compound with a carboxyl-group-containing polymerizable monomer.