I have my quest to get my skill to level 2. I have to go to cube slimes, but I have had that quest open for a very long time. Your sharks look funner than my skill. I think you talk to Hawkeye. If it works, power your grinding with matcha ice cream. If it does not work, cheer yourself up with strawberry banana ice cream.
Then maybe it is glitched Sorry, my quest for cube slimes has been open for a very long time because I do not feel like going so I probably was not the best person to advise you. Cheer yourself up with fettucine alfredo!
Also, on 8x its not too bad at cube slimes. I got all of them in like 2 hours lmao