No one spoke in opposition to the proposed ban, which has the goal of encouraging shoppers to take their own reusable bags to the store.
"My concern is that people now using plastic bags will use paper bags, and that is not good for the environment," said Councilwoman Verna Rollinger.
Monica Finkestein showed graphic and heartbreaking photos of birds and sea creatures that had ingested or were entangled in plastic.
"The public has to see this," said a deeply touched Councilwoman Elizabeth Pearson.
John Stalker showed the contents of a stomach from a necropsy at the Pacific Marine Mammal Center.
"The bags can be mistaken for a squid," he said.
Most of the speakers also encouraged the council to put a fee on the use of paper bags to discourage their use.
"My daughter and I traveled all over Italy, and we couldn't get a (plastic) bag for anything," Rollinger said. "We only had to carry groceries home in our arms once. You learn quickly, and we made sure we had a big bag when we went shopping."
Besides serving as a reminder, the fees also make the city's declaration against negative impacts on the environment stronger, said Chad Nelsen of the Surfrider Foundation.
"We will take what you guys do here to inland cities and say, 'Look, Laguna is pushing forward,'" said Surfrider Rick Erkeneff. "We can use that to influence other cities up the watershed."
Stephanie Barger said plastic bags should be banned in all retail outlets.
City staff proposed exempting the Farmer's Market from the ban, which uses plastic produce bags.
Councilwoman Jane Egly opposed the exemption, although produce wrapped in plastic in markets was not mentioned in the discussion.
City Environmental Specialist Michael Phillips said proposed implementation of the plastic bag ordinance will mirror the introduction of the ban on single-use Styrofoam containers in Laguna.