Login to your MCPE Index account, click Add Server and paste the IP into the field asking for the IP and then copy the port which you forwarded before (default is 19132) into the port field.
A hatcling is any animal that is newborn from a hard shell. Turtles are born from a hard shell cover. Thus, it should be called a hatchling. A hatchling is the newborn of animals that develop and emerge from within hard-shell eggs. The offspring of birds and reptiles are often hatched naked and with their eyes closed.
In the iPad game Demonsouls, a water demon that looked like a giant turtle is called water gamera. In the 2012 Tim Burton film Frankenweenie a turtle named Shelly (who is ironically owned by an Asian character) is accidentally exposed to a growth formula, and the turtle mutates into a giant Gamera-like monster that rampages through a carnival.