Sunshine Archipelago Theories

The only island officially named and visited in the Sunshine Archipelago is Isle Delfino. As such, the locations listed on the other islands were decided based on the following theories. Following the pattern set by Isle Delfino, each island was unofficially named after the animal it resembles, in italian.

Peach Beach

 * Tropical Setting;
 * Overall shape and terrain resembling that of the crab's right claw;
 * Presence of Piantas and Noki as spectators; presence of the Daisy Cruiser; 'Sunshine' written on the other ship;

Mario Beach

 * Tropical Setting;
 * Overall shape and terrain resembling that of the crab's left claw; a brown mountain on the claw right where the brown mountain appears on the Mario Beach track;
 * Presence of the Daisy Cruiser;

Coconut Mall

 * Presence of Piantas;
 * Tropical setting, and tropical themed shops (Coconut Café; Tropical Grocery);
 * Located in front of a long stretch of land, similar to the front of the main crab island;

Sunshine Airport
[IMAGE]
 * 'Sunshine' in the name;
 * Tropical setting;
 * Overall shape resembles that of the turtle's lower right limb; [SOURCE TO VIDEO]

Koopa Troopa Beach

 * Iconic Koopa-shaped rock formation can be seen from Sunshine Airport; [IMAGE]

Koopa Cape

 * Located on the coast of a 'Shell Island', potentially the name of the turtle's middle island. [IMAGE]
 * "Koopa-themed" region, alongside Koopa Troopa Beach, in the Turtle-themed island.

Baseball Kingdom
[IMAGE]
 * Similar shape to the island