The special effects for the films "Clash of the Titans" (1981) and "Mysterious Island" (1961) were provided by Ray Harryhausen. His effects were almost always seen as very impressive by both movie critics and fans.

Harryhausen's creations in "Mysterious Island" include an oversized bird, monster bees, and a giant squid. Other effects also include the impressive backdrop of the island's volcano and the ruins of an undersea city, not to mention the Nautilus submarine.

"Clash of the Titans" was the last movie to feature the special-effects magic of Harryhausen (who produced the film). As a master, he used stop-motion imagery effects, whose heyday came in the 1950s and '60s. With his mythical creatures, like Pegasus, the writhing winged horse, and Medusa with her primitive face of rage, Harryhausen created visions in the film that were designed to have some kind of a lasting effect on the movie audience.

Raymond Frederick Harryhausen was born on June 29, 1920 and died on May 7, 2013. He was an American artist, designer, film writer and producer, and a visual effects creator. He is also known for creating a form of stop motion model animation called "Dynamation". He worked on at least 16 major films during his active career from 1939–2010. His noteworthy films include "Mighty Joe Young" (1949), "The 7th Voyage of Sinbad" (1958), "Jason and the Argonauts" (1963), " First Men in the Moon" (1964), "One Million Years B.C." (1966), and "Clash of the Titans".

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