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Bites, Stings & Sea Hazards

Slovenian venomous snakes — only three

  • Modras (Horn-nosed viper, Vipera ammodytes) — most common; grey/brown with zigzag pattern; HORN on the snout
  • Navadni gad (Common viper, Vipera berus) — most widespread in Europe; mountain meadows, forest clearings; grey/brown with zigzag
  • Laški gad (Italian viper, Vipera aspis) — rarest; western Slovenia; less distinct zigzag, may be reddish/orange

Identifying vipers vs harmless snakes

Vipers have a zigzag pattern on the back and narrow vertical pupils. Most non-venomous Slovenian snakes lack the zigzag.

Snake venom effects

Venom enters skin and subcutaneous tissue (fangs are short ~0.5 cm). Local: swelling, intense pain, bruising. Systemic: abdominal pain, vomiting, diarrhoea, blood pressure drop, dizziness, urinary changes, breathing problems. Some develop allergic reaction to venom itself.

Snakebite first aid

  • KEEP STILL — slows venom spread through lymphatic system
  • Wash with water if available
  • Remove jewellery, watch, footwear, tight clothing — swelling will come
  • Immobilise the bitten limb
  • Call 112
  • Cool the area if possible
  • If safe: photograph the snake
  • Transport to hospital
  • DO NOT suck the wound, cut it, or burn it — proven harmful
  • DO NOT chase or try to catch the snake

Jellyfish (Adriatic)

  • Mesečinka (Moon jellyfish): glows in the dark; feels like a mild electric shock; redness, blisters, pain
  • Cubomedusa (Box jellyfish, ~3 cm): painful sting
  • Most other jellyfish in the Adriatic: harmless

Sea anemone

Wax sea anemone — only Adriatic species causing serious stings. Tentacles cause blisters and swelling.

Jellyfish/anemone first aid

  • Rinse the area with SEAWATER — never rub with sand
  • Cooling cream or ice if needed
  • Allergic reaction (urticaria, breathing difficulty, dizziness) → seek medical care

Greater weever (Morski pajek) — most venomous Adriatic fish

Small fish (up to 25 cm), hides in shallow sandy bottoms. Dorsal spines connected to venom glands. Stepping on one causes intense pain that climbs up the limb, with redness and swelling.

Weever fish first aid

  • Fish venoms are HEAT-LABILE — they break down at high temperature
  • Immerse the affected limb in HOT water, 50–60 °C (or as hot as tolerable WITHOUT scalding)
  • Keep submerged for at least 1 hour — pain reduces gradually
  • Severe pain or allergic reaction → seek medical care

Sea urchin

  • Remove spines as quickly as possible with tweezers (otherwise wound infects)
  • Soak the foot in HOT seawater (some species are mildly venomous)
  • Soaking in vinegar may help dissolve spines
  • Larger embedded spines → minor surgical removal by a doctor
Bites, Stings & Sea Hazards