Oko-oko is a Filipino dish consisting of rice cooked inside a whole sea urchin shell.
It is a common delicacy in Tawi-Tawi, Sulu, Basilan, and the Zamboanga Peninsula.
[2] Oko-oko is prepared with a specific type of sea urchins called tehe'-tehe' (also transcribed as tehe-tehe).
Uncooked rice mixed with spices and various ingredients are then poured into the hole.
Oko-oko is eaten by cracking the shell and peeling it like a hard-boiled egg.