San Francisco Mayor Ed Lee is making one of his biggest bets yet on the 49ers when the team takes on the Baltimore Ravens in the Super Bowl this Sunday, city officials said.
Lee has agreed on a friendly wager with Baltimore Mayor Stephanie Rawlings-Blake on the outcome of the big game in New Orleans.
As part of the bet, the winning mayor will host the losing mayor to take part in a day of service with local programs from AmeriCorps, a federal community service agency.
In addition to serving the community, the mayors are putting hometown seafood on the table.
The losing mayor will visit a local crab market while wearing the jersey of the winning team and crack open the local crustacean -- either a Dungeness crab in San Francisco or a blue crab in Baltimore.
The mayoral betting is among several between the two cities, including bets between the symphonies and zoos that were announced Thursday.
On Friday, aquariums in both cities got in on the wagering action.
The California Academy of Sciences is taking on the National Aquarium in Baltimore in the days leading up to the
showdown on Sunday, museum officials said.
The two aquariums are participating in the Super Fish Bowl and using social media to get fans involved in the friendly duel.
Using the hashtag #SuperFishBowl to follow along on Facebook, Twitter and Instagram, both aquariums are asking fans to like animal photos from the competing institutions.
On game day, the aquarium from the winning city will receive $1 from the defeated team's aquarium for each "like" on their Super Fish Bowl photo, museum officials said.
The winning donation will be made to either the National Aquarium's Marine Animal Rescue Program or the California Academy of Sciences' Coral Conservation program.
No matter which aquarium proves victorious, the donated money will go toward animal care and conservation efforts, officials said.
The friendly competition will kick off today with divers at each aquarium wearing their home team jerseys during daily dive presentations at their respective coral reef exhibits.
This is the sixth time the 49ers have played in the Super Bowl, but is their first appearance since 1995.