Bombyx mori 300 to about 900 m (1,000 to 3,000 ft) long. The fibers are very fine and lustrous, about 10 μm (0.0004 in) in diameter. About 2,000 to 3,000 cocoons are required to make a pound of silk (0.4 kg). At least 70 million pounds of raw silk are produced each year, requiring nearly 10 billion cocoons. Due to its small size and ease of culture, the silkworm has become a model organism in the study of lepidopteran and arthropod biology. Fundamental findings on pheromones, hormones, brain structures, and physiology have been made with the silkworm. One example of this was
Mori Point Native Americans and, later, by the Spanish. Francisco Sanchez received "Rancho San Pedro" in 1839 during the Rancho period, which encompassed much of present-day Pacifica, including the land that would later be called Mori Point. The land now occupied by Mori Point was purchased by Stefano Mori and his family in 1888, who operated a farm and ranch at the point. The kitchen, built to feed employees, eventually became the Mori Point Inn, which remained in operation until 1965. The exact date of establishment is in question, but newspaper reports from 1910 cite Steve Mori as manager of the Inn