iceberg

“There are incredible scenes where it’s like an iceberg, you’re just seeing the top, but there’s a lot roiling below,” she says.

Yang has been known to portray the iceberg that sank the Titanic or the adorable Thai pygmy hippopotamus Moo Deng.

A postcard written from the Titanic by a man who lost his life when the ship hit an iceberg three days later will go on sale later this month.

But the charity believes this figure is just the "tip of the iceberg".

Detectives fear the four victims could just be the tip of the iceberg.