From Bulbapedia, the community-driven Pokémon encyclopedia.
The Water 3 Egg Group (Japanese: すいちゅう3 Underwater 3) is one of the fifteen Egg Groups. Like its counterparts Water 1 and Water 2, it is mostly made up of Water-type Pokémon.
Characteristics
The Water 3 Egg Group is mostly characterized by its members' resemblance to aquatic invertebrates; most are Water types. This group also contains most Fossil Pokémon, containing most of the Generation I Fossils, the Generation III Fossils, and the Generation V Fossils, despite not being based on invertebrates. The Generation IV Fossil Pokémon and Aerodactyl instead belong to other Egg Groups.
It is a relatively small Egg Group. Most Pokémon that are capable of breeding into other Egg Groups breed into the Water 1 Group.
Pokémon
Only in this Egg Group
In this and another Egg Group
In other languages