Freediving for crayfish in New Zealand Crayfish There are two species of crayfish in New Zealand. The spiny red rock lobster (Jasus edwardsii) and the larger packhorse crayfish (Sagmariasus verreauxi). There is nothing is more kiwi than catching “a feed of crays” and probably the main reason most people get into scuba diving. Crayfish are found in cracks and under large boulders. Invariably these location have either a backdoor or plenty of space allowing them to slip well out of reach . Wary of any movement, catching crayfish is an artform in itself.