Penelitian ini bertujuan untuk mengetahui kelimpahan Pugilina sp di Pantai Amal Lama Kota Tarakan. Penelitian ini dilaksanakan di Pantai Amal Lama Kota Tarakan pada bulan November 2017 sampai April 2018. Pengambilan sampel dilakukan pada saat surut menggunakan 10 transek di lokasi Pantai Amal Lama Kota Tarakan pada titik koordinat yang berbeda. Pugilina sp yang didapatkan di Pantai Amal Lama Kota Tarakan paling tinggi berada di plot 7 dan 8 dengan nilai kelimpahan 0,1 ind/m2.
Kata kunci: Kelimpahan, Pugilina sp, Pantai Amal Lama

The objective of this research was to find out the abundance of Pugilina sp at Amal Lama beach in Tarakan. This research had been conducted at the Amal Lama beach in Tarakan on November 2017 to April 2018. Sampling was carried out at low tide using 10 transect at Amal Lama Beach in Tarakan at different coordinate points. Pugilina SP obtained at the Amal Lama Beach, Tarakan was the highest in the plot 7 and 8 with an abundance value of 0.1 ind/m2. Keyword: Abundance, Pugilina sp, Old Amal Beach