Indonesian Muslims trepangers from the southwest corner of Sulawesi visited the coast of northern Australia, "from at least the eighteenth century" to collect and process "trepang", a marine invertebrate prized for its culinary and medicinal values in Chinese markets. Remnants of their influence can be seen in the culture of some of the northern Aboriginal peoples. Regina Ganter, an associate professor at Griffith University, says, "Staying on the safe grounds of historical method ... the beginning of the trepang industry in Australia be dated to between the 1720s and 1750s, although this does not preclude earlier, less organised contact." Ganter also writes "the cultural imprint on the Yolngu people of this contact is everywhere: in their language, in their art, in their stories, in their cuisine." According to anthropologist John Bradley from Monash University, the contact between the two groups was a success: "They traded together. It was fair - there was no racial judgement, no race policy." Even into the early 21st century, the shared history between the two peoples is still celebrated by Aboriginal communities in Northern Australia as a period of mutual trust and respect.