"To have a sprint finish after 18km paddling is hard but I'm stoked to finish second after such an epic race and proud to do the job for the Kiwi team," Shergold told Dscribe Media.
"It was a very tactical race in extremely hot conditions, with little breeze to cool down in the flat areas around the islands, but we managed to use what little downwind there was to break away. It was a fantastic experience to race at this level and I've learned a lot from it."
Ashley Cochrane battled out a gruelling long distance race where her opponents used their Stand Up Paddleboard teammates as pacers, leaving Cochrane to paddle the entire course solo.
Cochrane finished in a time of 2:17:19 - 18m behind winner Jordan Mercer (Aus). In the short course race, Cochrane finished just under 3m off Mercer's time in 34:42.
The nine-day event included surfers and paddlers from 28 nations competing in nine surfing and racing divisions.
ISA World Stand Up Paddle and Paddleboard Championship
Overall Team Rankings: 1st Australia, 2nd US, 3rd Brazil, 4th Spain, 5th France, 6th Mexico, 7th South Africa, 8th Peru, 9th Venezuela, 10th New Zealand.
Men's Stand Up Paddleboard Surfing: 1st Poenaiki Raioha (Tah), 2nd Jackson Close (Aus), 3rd Antonine Delpero (Fra).
Men's Prone Long Distance Race (18km): 1st Rhys Burrows (Aus), 2nd Sam Shergold (Mnt, NZL), 3rd Rory Chapman (Aus).
Men's Prone Short Course (5km): 1st Rhys Burrows (Aus), 2nd Andrew Newton (Mnt, NZL), 3rd Rory Chapman (Aus).
Women's Prone Long Distance (18km): 1st Jordan Mercer (Aus), 2nd Carter Craves (USA), 3rd Itziar Abascal Rivero (Spa), 4th Ashley Cochrane (Mnt, NZL).
Women's Prone Short Course (5km): 1st Jordan Mercer (Aus), 2nd Carter Craves (USA), 3rd Itziar Abascal Rivero (Spa), 4th Ashley Cochrane (Mnt, NZL).