The Detroit River might not bring up the most savory of thoughts when one considers going fishing, but finned creatures weren’t what police were going after this week.

If they weren’t reeling in fish, what else would they be bring up from the Motor City’s river? You guessed it, cars.

Image source: WDIV-TV

Image source: WDIV-TV

From Monday through Wednesday this week, the Detroit Police Underwater Recovery Team brought up more than a dozen vehicles, according to MLive.

“It’s not uncommon for people to dump cars; it’s just a fact of life,” Deputy Chief Steven Dolunt told MLive. “Sometimes they’re empty, sometimes they have evidence, sometimes there’s a body — so far, not this time.”

Other reasons include insurance fraud, he added.

Image source: WDIV-TV

Image source: WDIV-TV

Image source: WDIV-TV

Image source: WDIV-TV

According to WDIV-TV, 17 vehicles were recovered, but police were really on the hunt for one in particular. The reason was not divulged in the report.

Watch the algae-covered cars being brought up in WDIV report:

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Trained police dive into the river monitoring what’s below every two weeks.