It kills you
They possess a highly-toxic venom !
Banded sea crates are sea snakes.
they are snakes, not fish
the warter
yes
it is venomous
Neurotoxic venom
with venom & camouflage
They have fangs in the front of their mouth for injecting venom.
With highly toxic venom - as do all sea snakes.
They have highly potent venom which they inject into their prey when they bite them. The venom kills almost instantly.
The Banded Krait is one example - it lives almost entirely in the sea.