Three boys, all aged 16, drowned in the sea near the Marina beach here when a giant wave pulled them in last evening, police said.
The bodies washed ashore today, police said.
In the other case, two boys drowned in a lake at a village near Anthiyur in Erode district today.
The boys, aged 12 and 14, went to take bath in the lake along with their three other classmates of sixth standard at a school in Kollapalayam.
In Nagapattinam district, two boys, aged three and four, drowned in a pond being dug under the National Rural Employment Guarantee Scheme at a village near Vedaranyam in the district last evening, police said.