If you're prone to seasickness then look out, because these pictures will make even those with iron stomachs feel nauseous.
They look like they were taken in the middle of one of the world's great oceans, but believe it or not they were actually taken aboard the Manly passenger ferry that operates out of Sydney Harbour, Australia. Although the sea there is generally quite calm, recent windy weather whipped up the unexpectedly ferocious waves that you can see below. They were snapped by deckhand and photographer Haig Gilchrist, who uploaded them to his Instagram account along with the comment "great day to be working." We're not so sure about that!
More info: Instagram
This terrifying giant wave was recently snapped pounding a boat in Australia
Image credits: Haig Gilchrist
The photographs might look like they were taken in the middle of the ocean...
Image credits: Haig Gilchrist
But they were actually taken aboard the Manly passenger ferry that operates out of Sydney Harbour
Image credits: Haig Gilchrist
Although the sea there is generally quite calm, recent windy weather caused some unexpectedly big waves
Image credits: Haig Gilchrist
The pictures were taken by deckhand and photographer Haig Gilchrist
Image credits: Haig Gilchrist
He uploaded them to Instagram along with the comment "great day to be working"
Image credits: Haig Gilchrist
We're not so sure about that!
Image credits: bobsled1975