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BiologyThe giant guitarfish swims onto reef flats at high tide to feed and find refuge (7). Diet comprises crabs, lobsters, clams, small fish and squid (2). Males mature at a length of around 156 cm, females at around 177 cm. Reproduction is ovoviviparous, and litters of between four and ten live young are usual. In South African waters, birth takes place in summer (7).