Billabong International Ltd., the world's largest surfwear maker, said first-half profit declined 2 percent after the rising Australian dollar cut the value of overseas sales, Bloomberg News reported.

Net income fell to $81.5 million, in the six months ended Dec. 31, from $83.2 million a year earlier, Gold Coast, Queensland-based Billabong said. Sales rose 8.3 percent to $611 million.

Bloomberg reported the company gets almost three-quarters of revenue from outside Australia. It posted its first profit decline as the company battles a currency that gained 11 percent against its U.S. counterpart last year.