REVERE – Scrunched between fellow Blue Line riders, Deanna DeLeon took a break from reading to consider water transportation as an alternative to her almost hour-long workday subway commute from Lynn to Boston.?I know there is a ferry. I didn?t know it is in Lynn,” DeLeon said.As the ferry Cetacea eased away from its Lynn dock Monday morning, commuters like DeLeon sat in stop-and-go traffic on Ocean Avenue before paying $5 to park near Wonderland station and walk to the train platform.DeLeon estimates she pays $70 a month for an MBTA rider pass and $100 for parking to get to work, but she does not plan to abandon rail commuting for the waters of Lynn and Boston harbors unless a workday ferry ride fits into her budget.But Bella Agramovich of Marblehead said she might just give the new ferry a try. She likes the subway?s convenience and cost but she loves the ocean – she even parks along Revere Beach and walks to Wonderland so she can enjoy the view before boarding a train. Monday?s 8:30 a.m. Blue Line ride to downtown Boston took 15 minutes, but that was without the train delays and breakdowns Revere resident Jeep Chaojaroenpong said he has experienced as a Blue Line rider traveling to Boston?s Charlestown neighborhood to study English.?It?s convenient, but it takes a long time,” he said.He is skeptical about driving to Lynn and taking the ferry to Boston, even though a morning commute on the Blue Line means standing packed into the subway car with fellow passengers.?If I calculate the cost, I don?t think it?s worth it,” he said.Julie Giamattei drives from Salem to Revere on workdays and parks in Wonderland?s North Shore Road garage. She likes the idea of commuting by ferry but said she knows she can rely on the Blue Line to get her back and forth from home to work.?I work late sometimes, so it?s hard to tell,” she said.DeLeon rides the Blue Line because the subway is cheaper than driving into Boston and parking near her Back Bay job.?And it?s quicker than sitting in traffic,” she said.