Damn, I see this kind of question here like once every week.
The SEAL are a special operation force of the US Navy while the Marines is a separate branch of the Armed Force.
The training they go through are different. The average SEAL is probably better train then the average Marines, but they operation in small teams.
But the Marines are far bigger in numbers and more better equip.
If there was a scenario to destroy 20 Russian T-90 tanks. They small SEAL team will be screwed but the Marines, no problem, their AH-1Z Viper, AT weapon, M1 Abram tanks, M3 Bradley will rape them.
To say it in a way some people can understand, you're like comparing Ninja to Samurai.
In my opinion, a FORECON is better than a SEAL. FORECON do allot more training than SEAL, even the ones the SEAL consider unnecessary.
FORECON operate far behind line, even farther than SEAL would go. They do reconnaissance and specailize in more direct action. They are also supply to last for weeks out there.
They SEAL are just like, "go in there, kill him or bomb this and get out."
And My God, whats wrong with people saying Marines are under the Navy?
The Department of the Navy and it consist of the Navy AND the Marine Corps.
The Navy SEAL fall under the Navy, not the Department of the Navy while the Marines fall under the Department of the Navy. Theres a difference.
Department of the Navy ---> Navy ---> Navy SEAL
Department of the Navy ---> Marine Corps ---> FORECON
Damn do I have to draw a damn chart for some people?