Sayyiduna Anas bin Malik (may Allah be pleased with him) said that Abu Talhah (may Allah be pleased with him) set out on a military expedition by sea and passed away on the ship. They could not find any place to bury him, so they waited six days; then after seven days they found a place to bury him, and he was still in the same state, not having changed at all. As for those who say that he died in Madinah (the details are in the next narration):
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 4667