You Do Need power plug adapter while traveling from Tuvalu to Morocco.

Here is Why You Need An Adapter

The outlet and plug type used in Morocco are C and E and in Tuvalu is I. This is how they look like.

Tuvalu

In Tuvalu, outlets of type I are in use.

Type I

Morocco

In Morocco, outlets of type C and E are in use.

Type C

Type E