On the canoe route to Thiên Cung - Ðầu Gỗ Grottoes, one should visit Hòn Sư Tử Biển or Sea Lion Islet, which is 10 minutes away from the Bãi Cháy Tourist Wharf.

Amidst the vast seawaters of Hạ Long, you recognize a high rock jutting from the sea, resembling a lion stretching.