| Substrate inspection | Juveniles and subadults less than 2 m TL, sites 1 and 2 | 89 (S), mean duration 8.5 seg (4-15 seg) | A shark approached a hole or crevice poking the substrate with its rostrum. The shark inclined the body forward and introduced its head and/or anterior part of the body in the hole performing abrupt lateral undulations to adjust the anterior part of the body to the hole and keep the body in position. | Reef flat and front reef, 0.5 to 1.5 m |
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| Sardine blitz | Juveniles and subadults less than 2 m TL, sites 1 and 2 | 47 (S, C), mean duration 15.1 seg (4-30 seg) | One or more sharks approached the sardine schools exhibiting usual “patrolling behaviour” and when at a distance of less than 2 m, suddenly stroked the fishes with short bursts of speed towards a small part of the school. | Reef and rocky flats, sandy bottom with sparse reefs and rocks, 0.5 to 1.5 m |
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| Sand hunting | Subadults larger than 2 TL and adults, sites 3 and 4 | 12 (C), mean duration 37.7min (17-38min) | Sharks larger than 2 m TL were initially observed performing “patrolling behaviour” at the deeper near-shore section of the beach (~ 1.5 m depth), immediately beyond the surf zone. Similar to the “sardine blitz” described above, but sharks only attacked the schools of sardines in the swash zone (0.3-1 m depth) immediately after the waves have broken. | Sandy beach, 0.3 to 1.5 m |
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