 The range of the sicklefin lemon shark extends from South Africa to the Red Sea ( including Mauritius , the Seychelles , and Madagascar ) , continuing eastward along the coast of the Indian subcontinent to Southeast Asia , extending as far north as Taiwan and the Philippines , and as far south as New Guinea and northern Australia . This species is also found around numerous Pacific islands , including New Caledonia , Palau , the Marshall Islands , the Solomon Islands , Fiji , Vanuatu , and French Polynesia . This species likely colonized the central Pacific by infrequently " hopping " from one island to the next . Significant levels of genetic differentiation between sicklefin lemon sharks in Australia and French Polynesia , 750 km ( 470 mi ) apart , suggest that little intermingling occurs between regional subpopulations . 
