S. dubia explained

S. dubia may refer to:

• Sepia dubia, a cuttlefish species native to the southeastern Atlantic Ocean
• Schoeniparus dubia, the rusty-capped fulvetta, a bird species found in Bhutan, China, India, Laos, Myanmar and Vietnam
• Sphyraena dubia, the Guachanche barracuda, an ocean-going fish species
• Staehelina dubia, a plant species in the genus Staehelina