Delta police Const. Sharlene Brooks talks to the media about a mysterious left foot that was found submerged near Westham Island Monday. (CBC)

A human foot was discovered partially submerged in the water near Westham Island in Ladner, B.C., Delta police said Monday.

It's the fifth human foot police have found in the province in less than a year.

"As far as it being linked to other partial remains found, we haven't dismissed that. We're considering all possibilities," Const. Sharlene Brooks told CBC News.

A couple out for a walk in the 2800 block of Savage Road spotted a shoe floating in the water around 10:30 a.m. and called police, she said.

Investigators said it's a left foot.

"Right now we're working very closely with the B.C. coroners service to identity the person whose remains we have recovered," Brooks said.

Four right feet, each wearing a sock and sneaker, have been discovered in the province since August.

A woman's right foot was found on the uninhabited Kirkland Island in the Fraser River in May, just a few kilometres from Westham Island where Delta police found the fifth foot Monday.

Three other men's right feet washed up in the Gulf Islands between Vancouver and Vancouver Island. In August, feet were discovered on Gabriola and Jedediah islands and, in February, another foot was found on Valdes Island.

B.C.'s chief coroner told CBC News Monday night that investigators have been unable to determine who the four right feet belonged to.

Terry Smith said DNA profiles have been completed on the feet but no matches have been made.

"We'll continue to try and identify known profiles that we can compare them to until we have a match," he said.