IDENTIFIKASI BENTUK DAN KELIMPAHAN MIKROPLASTIK PADA IKAN KAKAP PUTIH (Lates calcarifer) DAN IKAN KEMBUNG (Rastrelliger) DI PERAIRAN PANTAI DEPOK

Microplastics are plastic particles < 5 mm in size from large plastic fragments, industrial waste, and household products (microbeads). Some microplastics come from rivers that flow into ocean which can threaten marine biota and are vulnerable to consumption by marine organisms because they are considered foods. Microplastics have spread widely in Indonesia seas, one of which is Depok Beach, Yogyakarta. White snapper and mackerel are two types of fish often consumed by tourists and local people in the Depok Beach. This research aims to identify the form of microplastics and their content in mackerel and white snapper. This research method includes three stages, namely 1) taking samples of white snapper and mackerel from the fish's stomach, intestines and gills, 2) testing samples using the National Oceanic and Atmosphere Administration (NOAA) method for analyzing microplastics in the marine environment and FTIR to determine chemical compound groups in microplastics. The results of microscope observations showed that the forms of microplastics found in fish were fibers, fragments, pellets and films. For three months of data collection, the results of increasing microplastics in mackerel each month were 28.74% in fiber, 14.96% in fragment, 17.04% in film and 20% in pellet with the largest abundance value being 430 particles/gram in fragment. The results of increasing microplastics in white snapper each month were 5.93% in fiber, 20.84% in fragment, 27.60% in film and 29.41% in pellet with the largest abundance value being 248 particles/gram in fragment.