Millions of bat swarms out out of the Deer Cave in order to hunt for insects at dusk, usually about 5pm to 7pm. On some occasions they have been known to fly out at 4pm, usually on darker, cloudy days.
The catching of bubuk is an annual cycle in Miri. During this phenomenon these shrimps arrive in the millions in the shallow waters of the sea off the beaches of Miri, and the fisherfolks using their fishing tool, known as the 'paka', scoop them up from the waters by wading into the sea.
Millions of bat swarms out out of the Deer Cave in order to hunt for insects at dusk, usually about 5pm to 7pm. On some occasions they have been known to fly out at 4pm, usually on darker, cloudy days.
Nicknamed "Blue Tears" among the locals, this phenomenon is a sight to behold and has sent many people to the beaches in the evenings.
The catching of bubuk is an annual cycle in Miri. During this phenomenon these shrimps arrive in the millions in the shallow waters of the sea off the beaches of Miri, and the fisherfolks using their fishing tool, known as the 'paka', scoop them up from the waters by wading into the sea. 
