BPH Global Ltd (ASX:BP8) said assay results from the first phase of the cultivation of the sesuvium portucalastrum seaweed in the laboratory in clean, filtered seawater from the Singapore Island of Sentosa showed gold assays of up to 14.9 milligram-per-kilogram (mg/kg) and copper assays of up to 10.9 mg/kg, according to a March 7 Australian bourse filing.
The cultivation was conducted at Gaia Mariculture's Singapore facility, and initial tests revealed "exceptional" silver and cobalt levels, the filing said.
The second phase will shift focus to cultivating the seaweed species in the waters of Johor, Malaysia, which are close to shipping lanes and industrial activity, allowing it to test its hypothesis that seaweed absorbs higher mineral concentrations in dirty polluted waters than seaweed grown in pristine waters.