Operation
During March 2020, 20 SMART drumlines were deployed for 15 days at Ballina-Lennox Head and 15 SMART drumlines for 11 days at Evans Head. Environmental conditions determined how long SMART drumlines were deployed on any given day, ranging from 5:02h to 12:14h. On average, SMART drumlines were deployed daily for 9:41h at Ballina-Lennox Head and 9:22h at Evans Head.
Catch
During March 2020, twelve target sharks were caught (Table 1): all Tiger Sharks at Ballina-Lennox. Two non-target animals were caught, including a Leatherback Turtle that was foul hooked on the flipper and a Sandbar Shark (Table 1). All animals were released alive.
Comments
When the contractors responded to nineteen alerts that had no catch, they found that four hooks had no bait remaining, one hook had 20% bait remaining, one hook 80% bait remaining, and thirteen hooks had 100% of the bait remaining.
All animals triggered an alert to the DPI contractors who responded and were at the SMART drumline within an average of 20 minutes.
Table 1: The date and time of capture of species and their sizes (total length for sharks or disc width for turtles in m), sex, and status during the month of March 2020.
Beach name | Date | Time | Species | Size (TL) and sex | Status |
---|---|---|---|---|---|
Ballina to Lennox Head | |||||
Lennox Head Beach | 24/03/2020 | 16:01 | Tiger Shark | 2.8; Male | Alive |
Lennox Headland | 06/03/2020 25/03/2020 31/03/2020 | 13:45 09:15 09:24 | Tiger Shark Tiger Shark Tiger Shark | 1.9; Male 2.1; Male 2.0; Female | Alive Alive Alive |
Sharpes Beach | 05/03/2020 05/03/2020 05/03/2020 26/03/2020 26/03/2020 | 09:14 13:39 14:07 06:45 08:21 | Tiger Shark Tiger Shark Tiger Shark Tiger Shark Tiger Shark | 2.5; Female 2.8; Male 1.5; Male 2.5; Unknown 2.5; Female | Alive Alive Alive Alive Alive |
Angels Beach | 26/03/2020 | 09:51 | Tiger Shark | 2.5; Male | Alive |
Shelly Beach | 05/03/2020 24/03/2020 | 16:09 13:56 | Tiger Shark Leatherback Turtle | 2.7; Female 1.8; Unknown | Alive Alive |
South Ballina Beach | 19/03/2020 | 13:05 | Tiger Shark | 2.0; Unknown | Alive |
Evans Head | |||||
Airforce Beach | 21/03/2020 | 10:20 | Sandbar Shark | 2.0; Female | Alive |