Greetings and Welcome, Victoria!
Seraphim is a designation used in Isaiah 6:1-12 to describe the same beings referred to as Cherubim in Ezekiel chapter 1 & 10 and as the four living beings described in the book of Revelation. The only differences are that those described by Isaiah and John have six wings, where Ezekiel records four. Ezekiel mentions them as each having for faces like that of a human, a lion, an eagle and an ox, where John describes them as being the same, but doesn't mention that each has four faces. They are the same four living beings that call out each horse as the Lord is opening the first four seals in Revelation.
These four living beings, cherubim, Seraphim's, seem to be a unique class of angelic beings and unlike the rest of the angels, they are the only ones mentioned as having wings. They appear often throughout the book of Revelation and are described in great detail in Ezekiel 1 &10. Each one of them has what is called a "Whirling wheel" which sits beside them and which the spirit of the beings resides in. Other characteristics are that, they are completely covered with eyes all over their bodies. When they move, the don't turn in the direction that they are moving in, but go straight ahead. I believe this is because since they have four faces, they don't need to turn, because there is face facing in each direction that they would go.
In both Isaiah and Revelation, they are recorded as continuously saying, "Holy, holy, holy" before the throne of God.