Acanthopleura echinata

An epibiont is an organism that lives on the surface of another living organism. An epibiont is, by definition, harmless to its host. In this sense, the interaction between the two organisms can be considered neutralistic or commensalistic; as opposed to being, for example, parasitic, in which case one organism benefits at the expense of the other, or mutualistic, in which both organisms obtain some explicit benefit from their coexistence. Examples of common epibionts are barnacles, remoras, and algae, many of which live on the surfaces of larger marine organisms such as whales, sharks, sea turtles, and mangrove trees. The host of the epibiont is typically referred to as the basibiont.

Scurria is a genus of sea snails, the true limpets, marine gastropod mollusks in the subfamily Lottiinae of the family Lottiidae.

Mytilus is a cosmopolitan genus of medium to large-sized edible, mainly saltwater mussels, marine bivalve molluscs in the family Mytilidae.

Concepción Province is one of four provinces of the Chilean region of Bío Bío (VIII). Its capital, Concepción, is part of the Greater Concepción conurbation, the nation's second largest metropolitan area after Santiago.

Talara is a city in the Talara Province of the Piura Region, in northwestern Peru. It is a port city on the Pacific Ocean with a population of 91,444 as of 2017. Its climate is hot and dry. Due to its oil reserves, and ability to produce aviation fuel, Talara hosted a United States air base during World War II. It was also one of two refueling stations for the Pacific Fleet. There were naval guns on the hills, and submarine nets in the harbor. The Ajax, Achilles and Exeter, three British destroyers, were refuelled there on their way around the Horn to catch the Graf Spee in Rio de la Plata. Talara is also home to a large fishing fleet. The city is served by the Cap. FAP Víctor Montes Arias Airport.

The Galápagos Islands are an archipelago of volcanic islands. They are distributed on each side of the equator in the Pacific Ocean, surrounding the centre of the Western Hemisphere, and are part of the Republic of Ecuador. Located 900 kilometres west of continental Ecuador, the islands are known for their large number of endemic species that were studied by Charles Darwin during the second voyage of HMS Beagle. His observations and collections contributed to the inception of Darwin's theory of evolution by means of natural selection.

Lessonia nigrescens, the grey weed or giant grey weed, is a South American kelp species in the genus Lessonia.

Coralline algae are red algae in the order Corallinales. They are characterized by a thallus that is hard because of calcareous deposits contained within the cell walls. The colors of these algae are most typically pink, or some other shade of red, but some species can be purple, yellow, blue, white, or gray-green. Coralline algae play an important role in the ecology of coral reefs. Sea urchins, parrot fish, and limpets and chitons feed on coralline algae. In the temperate Mediterranean Sea, coralline algae are the main builders of a typical algal reef, the Coralligène ("coralligenous"). Many are typically encrusting and rock-like, found in marine waters all over the world. Only one species lives in freshwater. Unattached specimens may form relatively smooth compact balls to warty or fruticose thalli.