Looking to find some sharks/rocks/mushrooms

[Canesvenatici]

Hello! If anyone has their islands set to june/July or October and wouldnt mind visitors-

I'm looking to collect sharks for my museum without island hopping/need rocks and mushrooms for DIYs so if anyones willing to let me borrow their rocks or rivers for a bit thatd be great!

I can leave a tip or something to that degree if you'd like as well