Operation

During August 2018, 20 SMART drumlines were deployed for 25 days at Ballina-Lennox Head and 15 SMART drumlines for 31 days at Evans Head (the first occasion since the trial started where the SMART drumlines were able to be deployed every day at a given location).  Environmental conditions determined how long SMART drumlines were deployed on any given day, ranging from 5:01h to 10:13h. On average, SMART drumlines were deployed daily for 8:32h at Ballina-Lennox Head and 8:34h at Evans Head.

Total catches

During August 2018, 24 target sharks were caught (Table 1): one male Tiger Shark from Ballina-Lennox Head, and 23 White Sharks (12 male and 11 female) from Ballina-Lennox Head (10 individuals) and Evans Head (13 individuals).  The total number of target sharks caught on SMART drumlines since 8 December 2016 is 275 White Sharks, 41 Tiger Sharks and 9 Bull Sharks.

One non-target animal (female Shortfin Mako Shark) was caught at Evans Head (Table 1).The total number of non-target animals caught since 8 December 2016 is 130 individuals from 13 species.

All animals were released alive.

Comments

When the contractor responded to eleven alerts that had no catch, they found that seven hooks had no bait, three hooks had the bait fully intact, and one hook had 10% of the bait remaining.

All caught animals triggered an alert to the DPI contractors who responded and were at the SMART drumline within an average of 17 minutes.


Table 1: The date and time of capture of species and their sizes (total length in m), sex, and status during the month of August 2018.

Beach name

Date

Time

Species

Size (TL) and sex

Status

Ballina to Lennox Head

     

Lennox Head Beach

22/08/2018

14:31

Tiger Shark

1.8; Male

Alive

Lennox Headland

15/08/2018

13:57

White Shark

2.4; Male

Alive

Sharpes Beach

04/08/2018

04/08/2018

22/08/2018

26/08/2018

08:29

13:19

11:01

07:42

White Shark

White Shark

White Shark

White Shark

1.9; Male

2.6; Female

2.3; Female

2.8; Male

Alive

Alive

Alive

Alive

Shelly Beach

11/08/2018

11:26

White Shark

2.7; Male

Alive

Lighthouse Beach

04/08/2018

09/08/2018

14:18

08:09

White Shark

White Shark

2.0; Female

2.6; Female

Alive

Alive

South Ballina Beach

05/08/2018

11/08/2018

11:26

13:15

White Shark

White Shark

2.4; Female

2.8; Male

Alive

Alive

Evans Head

     

Joggly Point to Shark Bay

15/08/2018

27/08/2018

27/08/2018

08:12

10:25

14:50

White Shark

White Shark

White Shark

2.3; Male

2.4; Female

2.5; Male

Alive

Alive

Alive

Main Beach

02/08/2018

03/08/2018

07/08/2018

07/08/2018

23/08/2018

29/08/2018

08:37

10:35

07:02

08:33

12:59

07:46

White Shark

White Shark

White Shark

White Shark

Shortfin Mako Shark

White Shark

1.6; Female

2.1; Male

2.5; Female

2.5; Female

2.5; Female

1.9; Male

Alive

Alive

Alive

Alive

Alive

Alive

Airforce Beach

03/08/2018

06/08/2018

14/08/2018

17/08/2018

29/08/2018

11:26

08:36

10:52

14:08

12:30

White Shark

White Shark

White Shark

White Shark

White Shark

2.6; Male

2.5; Female

1.7; Male

2.3; Male

2.3; Female

Alive

Alive

Alive

Alive

Alive