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