means any invertebrate member of the animal kingdom, irrespective of the stage of development thereof, but not such a member—
| (a) | included in the definition of "fish" in section 1 of the Sea Fishery Act, 1988 (Act No. 12 of 1988); |
| (b) | that can affect man or an animal only; |
[Definition substituted by section 1(e) of Act No. 18 of 1989]