Crew members on Hokule'a and Hikianalia's journey are doing more than just sailing.
As part of the Malama Honua voyage – to care for the earth – the crew is carrying out experiments. We caught up with one being done by the crew aboard Hikianalia.
"In the past you had crew members and you had the scientists, but on this voyage it's actually going to be the crew members who are conducting the science," said apprentice navigator Haunani Kane.
Kane explained what will be going on for the next three years aboard Hokule'a and Hikianalia.
"They're looking at the fish that we catch, that the crew are eating. They're looking at the bellies to see what the fish are eating," said Kane.
Crew members got their first chance recently when they caught an ono off Hikianalia.
"They can test for what area the fish is from, what general family….genetic testing – I think that's a lot of what this trip is about. This voyage is about science and education," said Kane.
We're cutting open the stomach, checking out any animals the fish could be feeding on. Also, check for any plastic debris," said Eckart, a Hikianalia crew member. "And we're sending these photos back to data, back to scientists on land."
Eckart and Kealoha Hoe carefully pick through the fish's stomach.
"So there's some parasites. We've got some scales off of some. Yeah definitely a worm in there; not a whole lot of food content," said Hoe, Hikianalia Watch Captain.
Of course nothing goes to waste. Fresh fish provided sashimi, poke, fried fish and soup.