Table 1.

Sampling details and hydrographic characteristics of the oceanographic features sampled during 2019 and 2021. Temperature, salinity and chlorophyll values were sampled from the underway seawater at a depth of 4 m. Values are mean ± SD. N = number of net tows, Temp = temperature

	Oceanographic feature	Date sampled	N	Temp (°C)	Salinity	Chl-a (μg L−1)	Bathymetric depth (m)
May 2019	EAC-1	11/9/2019	7	21.82 ± 0.03	35.66 ± 0.01	1.26 ± 0.17	4 772 ± 19
	EAC-2	13/9/2013	7	21.64 ± 0.06	35.68 ± 0.01	0.62 ± 0.21	4 774 ± 26
	Large Cyclonic Eddy-1	15/9/2019	10	21.17 ± 0.30	35.60 ± 0.01	0.71 ± 0.30	4 048 ± 681
	Large Cyclonic Eddy-2	20/9/2019	6	21.62 ± 0.21	35.60 ± 0.01	0.36 ± 0.13	3 404 ± 236
	Large Cyclonic Eddy-3	23/9/2019	6	21.78 ± 0.16	35.61 ± 0.03	0.13 ± 0.03	3 566 ± 82
	Shelf break upwelling	16/9/2019	6	20.50 ± 0.09	35.72 ± 0.01	1.24 ± 0.33	4 781 ± 3
	Small frontal eddy	18/9/2019	6	21.24 ± 0.10	35.59 ± 0.01	0.60 ± 0.12	4 813 ± 29
	Shelf-1	22/9/2019	8	21.66 ± 0.21	35.62 ± 0.01	0.33 ± 0.14	122 ± 5
	Shelf-2	26 and 27/9/2019	6	21.39 ± 0.26	35.64 ± 0.01	1.22 ± 0.35	86 ± 1
September 2021	Tasman Sea cyclonic eddy	14/5/2021	4	24.69 ± 0.02	35.29 ± 0.00	0.03 ± 0.02	4 179 ± 112
	EAC Frontal Eddy-1	16/5/2021 19/5/2021	4 4	25.19 ± 0.07 22.29 ± 0.05	35.22 ± 0.00 35.44 ± 0.008	0.14 ± 0.05 5.94 ± 0.54	4 772 ± 1 237 ± 16
	Frontal Eddy-2	23/5/2021	4	21.47 ± 0.21	35.53 ± 0.02	6.34 ± 0.37	136 ± 3
	Frontal Eddy-3	26/5/2021	4	22.15 ± 0.05	35.44 ± 0.01	1.63 ± 0.12	367 ± 66
	Frontal Eddy-4	2/6/2021	3	22.27 ± 0.91	35.41 ± 0.005	1.27 ± 0.31	231 ± 1.15
	Shelf-1	19/5/2021	4	24.05 ± 0.13	35.25 ± 0.01	0.26 ± 0.11	263 ± 20
	Shelf-2	25/5/2021	4	24.3 ± 35.23	35.23 ± 0.04	0.25 ± 0.02	92 ± 11
	Shelf-3	26/5/2021	4	24.19 ± 0.01	35.22 ± 0.00	0.14 ± 0.03	63 ± 3
	Shelf-4	27/5/2021	4	22.28 ± 0.09	35.42 ± 0.01	0.17 ± 0.05	78 ± 2