‘The Sea of Monsters’ is the second instalment of ‘Percy Jackson’ as Percy imitates Jason with his very own quest for the Golden Fleece, the quest being reminiscent of ‘The Odyssey’ in its journey through the Sea of Monsters. It was less nostalgic than the first of the series for me as from this point I have absolutely no memory of the story whatsoever making these rereads feel a lot more like the first time, which adds to the excitement just as much as what is lost in nostalgia. 

I think ‘The Sea of Monsters’ faltered slightly in contrast to ‘The Lightning Thief’, perhaps due to far less direct interactions between Percy and the gods which were the most interesting dynamics in the first book, however the standout in this case was how well Riordan plays around with mythology to adapt it to a modern setting and entangle different myths, which all hold their key classical pieces but are used in such a clever way for his own purposes of storytelling. What I didn’t enjoy quite so much was much of the re explanation that occurred about plot line and characters exclusive to ‘Percy Jackson’ as many times the reader is retold significances of things from the first book, or what happened or what Camp Half Blood is. Characters in places are completely introduced again almost assuming one didn’t need to read ‘The Lightning Thief’ if they desired to read ‘The Sea of Monsters’ (not sure who would do that) hence it felt quite repetitive and unnecessary at times. 
The greatest standout was the ending twist, very brief in regards to the plot and outside of the main quest line, but the weight it holds and the amount of plot shifts it could cause was such a good cliffhanger.