Carter was one of a few tight ends who were added to the Seahawks' roster Thursday while top option Ed Dickson (groin) is sidelined. Look for Carter to compete for a backup tight end and special teams role in Seattle.
Carter was waived by the Giants on Wednesday, Michael Eisen of the team's official site reports.
Carter was claimed off waivers this spring after appearing in three games with Minnesota in 2017. Should he pass through waivers unclaimed this time around, Carter would immediately become an unrestricted free agent.
Carter will reunite with former Vikings offensive coordinator Pat Shurmur, who was named the Giants new head coach Tuesday. Carter only played in three games for the Vikings during the regular season and failed to record a statistic in the process. He'll now join a tight end room led by Evan Engram and Rhett Ellison.