Difference between Frogspawn and grape coral

[Calappidae]

I cannot for the life of me tell the difference between a frogspawn or grape coral.. when I compare photos they all look similiar to me.. can somebody clear up what the difference is?

 

[nystang]

Some websites give confusing names and descriptions. Here is Frogspawn , euphyllia paradivisa (branching frogspawn) from my collection. The 2nd one is Grape coral known also as octopus frogspawn - Euphyllia yaeyamaensis. The tentacles as you see look different.

 

[GoingPostal]

They are both frogspawns just different types. Grape type usually fetches a bit more and mine does not reproduce anywhere near as quickly as the more common type.