Sexual maturity in Bigeye Threshers is reported to occur at approximately 300 cm for males and 350 cm for females, so based upon this assertion, it is likely that this specimen was sexually mature. Food Analysis of the stomach contents and internal organs was not possible as the specimen had been gutted at sea by the fishermen. They did, however, report 9 pieces of an unidentified fish species in the stomach which had a total weight of 18 kg. There was also a bite mark on the right flank which was probably sustained from a blue shark, Prionace glauca, while it was trapped in the net. Some measurements of the Bigeye Thresher shark from the north east Atlantic.
Lengths are in cm and as a proportion of the total length.
C-25 o C with a minimum of 14 o C at 75 metres. Results on Table 1 show that these temperature ranges are rarely met at the location where this specimen was caught. The Bigeye Thresher, in common with a number of other Lamniform species, is able to maintain body temperatures several higher than the surrounding water temperature by means of a rete mirabile system. This is a special tissue consisting of masses of fine intertwined arteries and veins which act as heat exchangers. Arteries, carrying cool, oxygenated blood from the gills, branch into smaller vessels which become entwined with veins.