Sunken Kingdom Pets and Weapons?

If you look at the two blades in the sand on the final chapter of A Pirates Life at the Castaway's camp, there is a green and white cutlass that looks like it resembles the tridents with a blue gem embedded in it. Is this a teaser to some new cosmetics? If so, I hope we also get some sunken theme weapons and cursed pets with glowing eyes similar to the ashen cursed pets!