Archive · 12 Aug 2025
Meet the Dubois’ Seasnake, the World's Most Venomous Marine Snake
The Dubois' seasnake is a super poisonous snake that lives in the ocean.
It's one of the most dangerous snakes in the world because its venom is very potent, even though it's small.
These snakes are found in warm waters near Australia and other islands, living in reefs and sandy areas.
Their venom can cause serious problems like paralysis and damage to muscles and kidneys.
Despite being so dangerous, they don't attack humans unless they feel threatened, and bites are rare.
The snake eats fish and eels and is listed as a species of Least Concern, though fishing nets can be a hazard.
The Dubois' seasnake is recognized as the most venomous marine snake.
These snakes are found in tropical waters near Australia, Papua New Guinea, and New Caledonia.
They live entirely in the ocean, often in reef flats and sandy seabeds.
The snake's venom contains neurotoxins and myotoxins that can cause paralysis, muscle breakdown, and kidney damage.
Bites are rare, and the species is of Least Concern, but bycatch in fishing nets is a potential threat.
- Who
- The Dubois' seasnake (Aipysurus duboisii).
- What
- The Dubois' seasnake, the most venomous marine snake.
- When
- Not specified in the article.
- Where
- Tropical waters off Australia, Papua New Guinea, and New Caledonia.
- Why
- Because of its extremely potent venom, containing neurotoxins and myotoxins.
- Common Name
- Dubois' seasnake
- Scientific Name
- Aipysurus duboisii
- Venom Potency (LD50)
- 0.044 mg/kg
- Habitat
- Reef flats, sandy seabeds
- Length
- Up to 148 cm (5 feet)
- Diet
- Moray eels, reef fish
- Conservation Status
- Least Concern