A jellyfish found in 2002 near a Japanese volcanic crater and identified in 2020 has been declared a new species. St George's Cross Medusa jellyfish measures 4 inches wide and 3 inches tall, has circular body with approximately 240 tentacles and distinctive bright red, cross-shaped stomach. Named Santjordia pagesi, 'Santjordia' refers to St George in Catalan, representing its cross-shaped stomach.