AUSTRALIAN scientists have discovered evidence that humans were into deep sea fishing tens of thousands of years ago.
A team of scientists from the University of Queensland and the ANU has reported on the discovery of one of the world’s oldest pieces of deep-sea fishing evidence in the journal Science. The report documents findings that prove that 42,000 years ago, our regional ancestors had mastered one of our nation’s favourite pastimes.
Professor Sue O’Connor made the discovery at Jerimalai cave in East Timor, of the earliest known example of a fish hook. Dr Chris Clarkson said the findings made by Professor O’Connor and team demonstrated that 42,000 years ago, our ancestors had high-level maritime skills, and, by implication, the technology needed to make the ocean crossings to reach Australia.
The discovery site at Jerimalai cave in East Timor, Pic: Professor Sue O’Connor ANU.
The study found more than 38,000 fish bones from 2843 individual fish dating back 42,000 years from the site, implying that the inhabitants were deep sea fishing.
The shell fish hook found by Professor O’Connor dates to between 23,000 and 16,000 years ago, showing that early human colonists were skilled crafts people as well as fishers.
The article states there is no evidence of hook-and-line fishing of this antiquity anywhere else in the world. The fact that it first appeared on our doorstep made it “extremely exciting and significant” Dr Clarkson said.
“It appears people had already been reliant on fish at the site for more than 20,000 years by the time these shell fish hooks appeared. We also know that the earliest colonists of our region were capable of long-distance sea voyaging,” he said.
What is still unclear, however, is how ancient people were able to catch pelagic fish.
“Fisherman today say it is certainly possible to catch tuna and other pelagic species from the shore from time to time, but the team think it is unlikely that this would explain the high proportion of pelagic fish bone found in the lowest layers at the site,” Dr Clarkson said.
The study found that more than half the very abundant fish bone at the site is from these difficult-to-catch pelagic species. This suggests systematic targeting of these species, possibly involving capture from boats, the use of nets, or some means of attracting the fish.
“It would be nice to think a sophisticated technology was in use, but we just don’t know what it was yet. We’re hopeful that new excavations at the site will help reveal that.”
The recent findings from Jerimalai cave have brought researchers a step closer to solving the mystery of how Australia’s ancient ancestors arrived at least 50,000 years ago.
“Boats were probably necessary for people to cross from Island Southeast Asia into Australia before 50,000 years ago. Even greater voyages were made out to islands of New Guinea and the Solomon Islands more than 40,000 years ago,” Dr Clarkson said.
Dr Clarkson and his colleagues have published their findings in the latest issue of Science.
