5 amazing facts Round #4 (list)

This is a Round #4 challenge for the Steemians who use the @esteemapp.
All rules are in a banner on the bottom of a post.

List

1. Men with long hair could not enter Disneyland until the late 1960's.
2. Blood is green at 50 feet underwater.
3. All clownfish are males when young.
4. The smell of rosemary improves mental performance.
5. The intestinal worm can grow to 100 feet long.

My opinion

Disneyland has scrutinizing rules even today, but not about the hair length.

I found out that blood is green because part of the light specter is missing, the red.

I think that clownfish name comes from that fact. It is amazing what nature can do.

I dislike the rosemary so for me it is an opposite effect.

I did not know it is possible for a worm to grow that long, it is one quite disgusting fact.

I will post 5 amazing facts Round # NUMBER (list), and whoever is intrigued, can follow up with 5 amazing facts Round # NUMBER (opinion).

Cover and banner designed by @aschatria, icon by @esteemapp.