Black-ray goby mother bird regurgitating food to her chicks. This way, the shrimp and the goby are kept well fed. Sometimes, if the shrimp is not kept well fed, it will resort to killing the goby. In the wild, most burrows are shared by male and female goby pairs, with their respective shrimp partners, and the female goby will use this burrow as a nesting site to lay her eggs. The obvious benefits to both organisms of this symbiotic relationship make the interaction a form of mutualism. Here is an interesting example of this. The other fish is a dartfish (genus "Ptereleotris").
Living Things + Living Things + Living Things + is the eleventh DVD of American rock band Linkin Park, originally released on March 22, 2013. The CD version of the video includes all the tracks of the band's fifth studio album, "Living Things". The DVD version of the video includes the live version of various songs from all the studio albums by the band, such as "Hybrid Theory", "Meteora", "Minutes to Midnight", "A Thousand Suns" and "Living Things". The DVD is known as a sequel of the DVD, "A Thousand Suns+". The DVD comes with a bonus CD that features all the tracks