Nava's shark piece is one of those that leaps out and bites you. This is especially true if you are drawn to the sort of primal art that comes from the minds of children. His work takes this and makes it all grown up (despite the oft uttered phrase, your kid could NOT actually do this).
But what kids conceive and the art they create is remarkable and valuable and it is a difficult thing for an adult to channel that and make it work. Of course this may not be Nava's intention at all and this should be something I discuss with a psychologist.
You can see more from the artist at robnava.com.
Boccato's work also uses memory but his work conjures more a sense of cultural deja vu. He sculpts in a variety of materials. This piece shows more of a direct reference to ceremonial masks than much of his work. His other pieces are more subtle. He studied at Cooper Union and lives in NYC.
You can see and read more at the gallery site linked above and at danielboccato.com.