Externally.
Adult jellyfish reproduce externally by releasing sperm and eggs into the water. When jellyfish are in the polyp stage, they can reproduce asexually by cloning themselves.
They Have Internal Fertilization
internal fertilization
External. In most cases, adults release sperm and eggs into the surrounding water, where the (unprotected) eggs are fertilized and mature into new organisms.
internal
external fertilization
they use internal fertilization they use internal fertilization they use internal fertilization they use internal fertilization
internal external not internal external not
Salmon use external fertilization
Clams utilize external fertilization.
Reptiles ONLY have internal fertilization
no (JP MAURYA)