You Do Need power plug adapter while traveling from Maldives to French Guiana.

Here is Why You Need An Adapter

The outlet and plug type used in French Guiana are C, D and E and in Maldives are C, D, G, J, K and L. This is how they look like.

Maldives

In Maldives, outlets of type C, D, G, J, K and L are in use.

Type C

Type D

Type G

Type J

Type K

Type L

French Guiana

In French Guiana, outlets of type C, D and E are in use.

Type C

Type D

Type E