Scorpionfish

Photo: luismartinezartola · CC BY-NC

Scorpaena scrofa reaches 50 cm and is the apex ambush predator of shallow Mediterranean reef systems, relying entirely on cryptic camouflage among sponge-encrusted rock rather than speed. Its dorsal spines deliver a painful venom used purely in defence, and individuals at Kallithea sit motionless for hours on prominent ledges where divers who look carefully can count four or five individuals in a single pass. The species is long-lived and site-faithful — established individuals at well-dived sites often remain within a few metres of the same rock for multiple seasons.