What is a rather unusual diet item of the bacteria Ideonella sakaiensis?

"Ideonella sakaiensis" is a bacterium from the genus "Ideonella" and family Comamonadaceae capable of breaking down and consuming the plastic polyethylene terephthalate (PET) using it as both a carbon and energy source. The bacterium was originally isolated from a sediment sample taken outside of a plastic bottle recycling facility in Sakai City, Japan.