Haiku is a very short form of Japanese poetry. The traditional subject of writing a Haiku is nature, but a modern Haiku is unlikely to be written under the subject of 'nature'. Haiku's are normally written in present tense. They consist of 17 syllables or less, that are divided into 3 lines.
Haiku is generally written in one long sentence. The first line must consist of five syllables, the second line of seven and the third line of five syllables. Haiku's are not rhymed, however they give a very strong meaning. Haiku's are a very common form of poetry in Japan and even around the world. A Haiku poetry from a famous poet can and have been sold to people around the word for thousands of dollars.
Cold sunlight shining--
On the pale waters of home,
The battle begins
- Rehan D'Mello