Didymo is a member of the group of single-celled aquatic plants (freshwater algae) known as diatoms. Although it is microscopic, didymo can form dense colonies called algal blooms which can be seen with the naked eye.
From a marketing perspective, publicity is one component of promotion which is one component of marketing. The other elements of the promotional mix are advertising, sales promotion, direct marketing and personal selling. Examples of promotional tactics include: 1  Announce an appointment.
A stunt is something interesting that is done in order to attract attention and get publicity for the person or company responsible for it. In a bold promotional stunt for the movie, he smashed his car into a passing truck. 2. countable noun. A stunt is a dangerous and exciting piece of action in a film.