The bright flash occurs because when sperm enters an egg it leads to a surge of calcium which triggers the release of zinc from the egg. As the zinc shoots out, it binds to small molecules which emit a fluorescence which can be picked up by camera microscopes.
Shibori is a Japanese technique of creating designs in dyed fabric. It is a dye-resist technique, using items that bind the fabric to create areas where the dye will not penetrate. Depending on the materials used and how the fabric is bound, the dyed designs vary from random splashes of color to highly symmetrical patterns.
From The Aquarium Wiki. An Iwagumi styled aquarium (also called Ishigumi Style) is based on a Japanese term for a collection of stones or rocks arranged in an aesthetic appearance in a garden.Iwagumi literally means rock formation.Typically the grouping of one large stone with two smaller stones that lean toward the central stone. Together with planting and fence design, lwagumi or ishigumi is one of the three major aspects of Japanese gardens.wagumi literally means rock formation. Typically the grouping of one large stone with two smaller stones that lean toward the central stone. Together with planting and fence design, lwagumi or ishigumi is one of the three major aspects of Japanese gardens.