A WORLD craze for donning fish tails and experiencing life as a mermaid has reached Spain’s sunny shores.

The strangest fish school in Spain – Sirens Mediterranean Academy in Tarragona, Catalunya – offers ‘mermaidology degrees’, which owner Susana Seuma confirmed is ‘not a joke’.

The mermaid costume helps improve swimming skills, and strengthens the lower back, buttocks, abs, arms and chest muscles.

“The basic concept is to do exercises and to practice swimming skills in a fun and different way,” she added.

Although a first for Europe, similar schools are already making waves in Florida, Texas and the Philippines.