Festival: Bila-Bila
Boac, the capital of Marinduque is being touted as the butterfly center of the Philippines due to the emergence of butterfly farms in the town. In order to promote the industry, the local government created the Bila-Bila Festival in conjunction with the Feast of the Immaculate Conception (the town’s patron saint) on December 8. On the day of the celebration, children from various schools in the town dress up in their best butterfly costumes for a parade that depicts the life cycle of the butterfly. Brass bands, street dancing by costumed delegates, and colorful, decorated floats also accompany the parade, with the image of the Immaculate Conception at the end of the procession.
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Epi Fabonan is a history teacher with a wide array of background on local history and geography. He loves to travel and document his adventures through photo-essays, slideshows and short films.

I was in Marinduque on Dec 8 last year. But I do not remember there was a celebration of the Bila Bila Festival in Boac. Was there a celebration or a tour of the butterfly farms in the Boac area?
there is no Bila Bila Festival in Boac only in Gasan. and most of Butterfly farm is located in Gasan.