Steven Universe (2017-) #7

Steven and the Gems set sail on the gem sloop to find and retrieve a gem artifact in a remote location inaccessible by warp pad. They discover that the artifact is guarded by a territorial gem monster, who shipwrecks the Crystal Gems in their first attempt to get the artifact. Luckily, Onion and his dad Yellowtail are out on a fishing trip and happen upon the Gems at just the right time.