Simon says: Meet the Dusky Shark (Carcharhinus obscurus)

The Dusky Shark (Carcharhinus obscurus)

🏡 Habitat
Found in warm & temperate waters worldwide, the dusky shark is considered extremely rare in the Mediterranean. However, along Israel's coastline, a unique seasonal aggregation occurs at the Orot Rabin power station in Hadera - 10 minutes from my home! Warm water discharged from the cooling system attracts dozens of sharks each winter. During spring, warming sea temperatures expand their roaming range along the entire Israeli coast, with sightings reported at Beit Yanai & the Alexander Stream estuary.

🐝 Breeding
The Hadera sharks are exclusively adult female dusky sharks. Scientists believe the warm effluent may help with thermoregulation & gestation, though the site does NOT function as a nursery, parturition, or mating area . The population includes 2 distinct genetic lineages - one Indo-Pacific & one Atlantic - indicating migration through the Suez Canal .

🌸 Food
A predator feeding primarily on fish, cephalopods, & other marine animals. The Hadera site's attraction may be linked to prey availability - mass fish kills from heatwaves & hand-feeding by visitors have been observed to influence shark behaviour & distribution .

⚠️ Conservation Alert
Listed as Vulnerable (VU) by the IUCN & protected under Israeli law - approaching, touching, or fishing them is prohibited . The site remains unregulated, with fishing, diving, & boating creating risks for both sharks & humans. A fatal shark incident occurred here in April 2025, highlighting the urgent need for science-based management & seasonal protection.

How to help: Observe from shore. Keep distance. Report sightings to INPA.

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