Because it is a 16x pack, it does not require performance-heavy mods like Optifine, though they can still be used for extra visual variety .
the .zip file from the creator’s official link (typically found in the Seafault 16x Release Video description) . Open Minecraft and go to Options > Resource Packs . seafault 16x
Watch the official release showcase to see the shark-themed HUD and blue particle effects in action: seafault 16x PACK RELEASE Sea Ravioli YouTube• Sep 28, 2021 seafault 16x PACK RELEASE Because it is a 16x pack, it does