👉 Falculiferidae is a group of crustaceans that belong to the order Annelids and are known for their distinctive appearance, including their long, slender bodies with two sets of eyes on each side. They have a wide range of body shapes, from flat-bodied crustaceans to elongated forms such as the sandfly. This group is characterized by its large gonads, which contain numerous eggs and larvae, and their ability to develop rapidly in the water column.