original: Approximately 1,100 mud volcanoes have been identified on land and in shallow water.
simplifications: Around 1,100 mud volcanoes were found on land and in shallow water. About 1,100 volcanoes were identified on land and in water. About 1100 mud volcanoes exist on land and in water. About 1,100 mud volcanoes exist on land and in shallow water. About 1,100 mud volcanoes have been seen on land and in shallow water. 1,100 mud volcanoes have been identified on land and in shallow water. Around 1,100 mud volcanoes have been identified. About 1,100 mud volcanoes are on land/shallow water. There are about 1,100 mud volcanoes that have been identified on land and shallow water. About 1,100 mud volcanoes have been identified on land and in shallow water