embryophagy

From Latin embryo and the suffix -phagy (“to feed on”); 1948; created to describe the behavior of sandtiger shark embryos.

embryophagy (uncountable)

1. The act of one embryo cannibalizing another for food in utero; at present only observed in some species of sharks.

• adelphophagy
• oophagy

Intrauterine Cannibalism in Sharks Google Search