Presuming you are refering to Hydrophis melanosoma as the black headed sea snake. The venom injected into mice (remember that we are humans) then the Brown Snake would be more venomous due to the subcutanious LD50 count. But there are so many factors that influence the bite, region, depth, activity etc etc so you cannot really say one is worse than the other. And its all subjective to the snake and the victim at the time, factors such as last bite and nutrition will effect the venom potancy to a small extent.
Venomous snakes in Australia include:
It is the inland taipan.
It is a yellow, venomous snake. It is the only species of snake which lives on an island. I don't know the name of the island. I don't know which state the island is close to. All I know is that it is yellow, it is the only species of snake on that island, and it is very venomous (deadly venomous). What is the name of the species of snake on that island?
A copperhead snake is venomous.
coral snake
the most venomous snake in England is the Adder also known as the common viper
All snake-bites are painful - even non-venomous ones. However - the pain usually subsides fairly quickly - unless you've been bitten by a venomous species (which the king snake is not).
Taipan
Members of the King snake family are non-venomous. They are constrictors.
The snake you're thinking of - is a Carpet python. It's a non-venomous species that grows to about 3 metres.
A death adder is an Australian snake. The definition is venomous Australian snake resembling an adder. It looks like a normal snake, but it is a dangerous creature.
The Amethyst Python is non-venomous, and grows to 700cm in length. The longest snake ever measured in Australia was a specimen of this species.
It is a yellow, venomous snake. It is the only species of snake which lives on an island. I don't know the name of the island. I don't know which state the island is close to. All I know is that it is yellow, it is the only species of snake on that island, and it is very venomous (deadly venomous). What is the name of the species of snake on that island?
Candice cook
King Cobra
cobra and python
King Cobra
Yes, the Australian Broadheaded Snake is a medium-sized venomous snake. It used to be common in the Sydney Basin but it is now regarded as an endangered species as so much of its habitat has been destroyed.
The aptly named 'Brown Snake' from Australia is a venomous brown snake.