Bathymetric mapping was used to map the sea floor. The accurate and recent sea floor data are needed by many human activities such as for water transportation routes and off-shore infrastructure constructions. General in-situ mapping using multi/single beam echo-sounder is time consuming, high cost and difficult access to a remote area. Bathymetric mapping on shallow water near coastal area also facing a challenge when the in-situ mapping is difficult to be performed for the reason of the access of survey-ship. In this research, we proposed a new technique to map the shallow sea floor (less than 80 m of depth) using optical remote sensing satellite data by exploiting the Landsat 8 and Sentinel 2A imageries. The bathymetric data estimated from these satellites then validated with in-situ measurement data collected in April and October, 2015. The range of absolute depth was 8.724 – 12.056 meter for Landsat 8 and 9.220 -11.149 meter for Sentinel 2. A promising result was obtained for Landsat 8 data with NMAE of 21.288% and wider range of estimated depth compared with obtained depth by Sentinel 2. Both samples point of remote sensing images failed to deal with water depth shallower than 8 m and deeper than 13 meters.