A half-hour boat ride from Cau Da Port and you'll arrive at Tri Nguyen Aquarium (open from 7:30 am to 5:00 pm) which houses a large variety of fish and other marine creatures. The aquarium is in the shape of a boat and you can climb to the top to look out over the horizon.
How to get to Hon Mieu - Hon Mieu is located about 5km’s southeast of Nha Trang. A ferry from Cau Da dock will take you to Tri Nguyen village for VND20,000 per trip and only takes 15 minutes. Most tour companies offer a tours that stop off at Hon Mieu.