Condor Ferries was criticised for doubling fares
Jersey and Guernsey's governments have launched a joint consultation to discover what islanders think of the available ferry services.
The governments have agreements with Condor Ferries, who provide services from the islands to the UK and France, which are due to expire in 2013.
The consultation asks for views on price, services provided and the possibility of increasing competition.
Views are being gathered by both States' websites until September.
Senator Alan Maclean, Jersey's minister for Economic Development, said: "Jersey and Guernsey have regular contact on a wide range of issues but it's unusual for us to consult the public in both islands at the same time.
"Sea transport is vital to both islands and we recognise that inter-island co-operation is essential if we're to work with an operator to licence viable services for all Channel Islanders."
Last year, Jersey politician Deputy Sean Power criticised Condor Ferries for doubling the fare price since competitor HD Ferries left the Channel Islands.
Representatives from both islands said they hoped that by working together on the ferry consultation they could save money.
Deputy Carla McNulty Bauer, Guernsey's Commerce and Employment minister, said: "We hope people in Guernsey and Jersey will take this opportunity to give us their views on sea transport so that we can move forward together."