What is a vegan substitute for scallops?

Could you please elaborate on what a vegan substitute for scallops might be, and how it can mimic the taste and texture of this seafood delicacy while adhering to a plant-based diet? Are there any specific ingredients or preparation techniques that are commonly used to achieve this? Furthermore, how do vegan alternatives to scallops compare nutritionally to the original seafood product, and are there any health benefits or considerations that vegans should keep in mind when consuming them?