Abstract

• The study area is located in Myeik City, the Tanintharyi Region of Myanmar. It is situated in the extreme south of the country on the coast of an island, the Andaman Sea. Myeik Archipelago lies off the far south coast of Myanmar. Samples from the Smart Island and Two-Face Island generally contained medium sand and fine sand, with minor silt, lime, and mica flakes. The (3) specimens are collected from Smart Island and Two-Face Island. All the dried residues were sieved into three fractions with mesh sizes of 30, 60, and 90. After sieving the samples, the dry samples were examined under a binocular microscope, and all the foraminifer specimens were found to be well preserved. The present study aims to focus on the distribution of foraminifer assemblages in the Andaman Sea, which is part of the complex geological setting. This result is mainly focused on the paleoecology of Holocene Foraminifers. The study areas reveal that (116) genera have been recorded belonging to (145) species. There are (36) Holocene index fossils that occurred in the study area. Textularia conica occurred in the area between 1000 and 3500 m of water depth, and Eponides sp., Lenticulia sp., and Textularia sp. arise in the deeper inner shelf to middle shelf. Bolivina sp and Bulimina pupoides are befallen in the outer shelf. Smart Island is the most populated and diverse area in the study area. According to this evidence, Smart Island is deeper than Two Face Island. Therefore, the western part of the study area is deeper than the eastern part of the study area. An attempt has been made to correlate the Bengal Basin fauna with the known Holocene fauna from the Atlantic and Pacific regions. This research has implications for the paleooceanography of Andman Sea.