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A- on the placement here: we normally get the shot right into the deltoid muscle in your upper arm/lower shoulder. So where is the deltoid in a baleen whale? Short 
https://twitter.com/wcbs880/status/1384155877897240587
https://twitter.com/wcbs880/status/1384155877897240587
The deltoid muscle extends and abducts (moves forward/up) the flipper - virtually all of joints in the flipper are 'locked' and all movement is at the shoulder joint - the flipper mostly functions steering and most propulsion is from the tail. [uncertain photo origin]
![The deltoid muscle extends and abducts (moves forward/up) the flipper - virtually all of joints in the flipper are 'locked' and all movement is at the shoulder joint - the flipper mostly functions steering and most propulsion is from the tail. [uncertain photo origin]](https://pbs.twimg.com/media/EzgNGA9XEAAZgxd.jpg "The deltoid muscle extends and abducts (moves forward/up) the flipper - virtually all of joints in the flipper are 'locked' and all movement is at the shoulder joint - the flipper mostly functions steering and most propulsion is from the tail. [uncertain photo origin]")
Normally used to just move the humerus, in cetaceans, the shoulder muscles are MASSIVE and the scapula is enormous - all because they've been co-opted to move the entire, stiffened flipper skeleton. [fetal Sei whale flipper, Schulte, 1916]
![Normally used to just move the humerus, in cetaceans, the shoulder muscles are MASSIVE and the scapula is enormous - all because they've been co-opted to move the entire, stiffened flipper skeleton. [fetal Sei whale flipper, Schulte, 1916]](https://pbs.twimg.com/media/EzgNhWqWUAEdZVG.png "Normally used to just move the humerus, in cetaceans, the shoulder muscles are MASSIVE and the scapula is enormous - all because they've been co-opted to move the entire, stiffened flipper skeleton. [fetal Sei whale flipper, Schulte, 1916]")
The deltoid is pretty far forwards, and so the placement of the AMNH whale's band-aid is possibly over the olecranon process and right over the elbow rather than deltoid. So, I would've shifted it slightly further forward [also from Schulte 1916]
![The deltoid is pretty far forwards, and so the placement of the AMNH whale's band-aid is possibly over the olecranon process and right over the elbow rather than deltoid. So, I would've shifted it slightly further forward [also from Schulte 1916]](https://pbs.twimg.com/media/EzgO-thXEAUqubp.png "The deltoid is pretty far forwards, and so the placement of the AMNH whale's band-aid is possibly over the olecranon process and right over the elbow rather than deltoid. So, I would've shifted it slightly further forward [also from Schulte 1916]")
As it happens, many features of the shoulder-powered steering in baleen whales and modern dolphins appears to have evolved convergently from basilosaurid whale ancestors, revealed by archaic fossil dolphins from SC. Read more on our research here: https://www.cell.com/current-biology/fulltext/S0960-9822(20)30828-9?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0960982220308289%3Fshowall%3Dtrue
