Ships stalled in the Gulf region due to the blockade of the Strait of Hormuz could pose an 'immense' threat, according to a paper published last week. Experts say biofouling on hundreds of ships over several months could lead to the spread of invasive species.

Scientists warn that thousands of stranded vessels may lead to the spread of invasive species around the world.

Scientists say no other shipping disruption has left so many ships idle in modern history — opening the door for potential environmental risks