You Do Need power plug adapter while traveling from Mauritius to Bermuda.

Here is Why You Need An Adapter

The outlet and plug type used in Bermuda are A and B and in Mauritius are C and G. This is how they look like.

Mauritius

In Mauritius, outlets of type C and G are in use.

Type C

Type G

Bermuda

In Bermuda, outlets of type A and B are in use.

Type A

Type B