Nigel Alan Marven (born 27 November 1960) is a British wildlife TV presenter, naturalist, conservationist, author, and television producer.

He is also known[1] for his unorthodox, spontaneous, and daring style of presenting wildlife documentaries as well as for including factual knowledge in the proceedings.

In 2000, Marven became the host of the hit annual Discovery Channel event Shark Week, and held this role for three years.

He then continued his partnership with Impossible Pictures as the studio moved on to ITV, beginning with Prehistoric Park in 2006, a fictional series about travelling back in time to rescue examples of extinct creatures such as Tyrannosaurus, the woolly mammoth, Arthropleura, and others.

In his final appearance for Impossible Pictures, Marven was featured as himself in season 3, episode 4 of the ITV action drama series Primeval, which aired in 2009.

In addition to being presenter for Impossible Pictures's time-travelling programmes, Marven also founded his own independent company Image Impact in 2003, and started producing his own wildlife films, including a few one-hour specials and then miniseries, such as Penguin Safari and Panda Adventure, both which aired on Channel 5 and Animal Planet.

One of his more recent successes, Ten Deadliest Snakes, was first broadcast on Animal Planet in the United States in spring 2014, and on Eden in the UK in June of the same year.

Highlights of Ten Deadliest Snakes included, among others, visiting sea krait caves in South China Sea, handling black mamba in South Africa, snake-hunting with Steve Irwin's son Robert in the billabongs of Australia Zoo and visiting the Brazilian island of Queimada Grande, home of the golden lancehead, with a scientific expedition.

In September 2020, Blue Meridian and Crytivo released the official trailer for the video game Prehistoric Kingdom, featuring Marven as narrator.

[8] Marven narrated the upcoming independent documentary project Forgotten Bloodlines: Agate, which will take place during the Miocene epoch.

Marven was bitten by a venomous green pit viper in the East Malaysian state of Sabah in the summer of 2014 during filming of the first episode of the show Eating Wild.

A similar encounter happened in December 2008 while Marven was making a short film about black-necked spitting cobras for Webosaurs.

Though he wore a mask, the cobra venom landed in his hair, then mixed with sweat and ran into his eyes, so he stopped the filming until next morning.

In the third episode of his 2012 series Wild Colombia, Marven was bitten on his nose by a non-venomous Central American tree boa, causing blood to cover his face.

Marven ran the 2008 London marathon in 4 hours and 4 minutes to try to raise £20,000 for the Whale and Dolphin Conservation Society UK.

In the third episode of Season 3 of Ten Deadliest Snakes, he covered the Kemp's ridley sea turtle conservation project in Tamaulipas, Mexico.

In 2016, Marven produced and narrated a short film featuring the work of the Black Mamba Anti-Poaching Unit, which is fighting against rhinoceros poaching in South Africa.

[22] In 2022, a species of Cretaceous spathiopterygid wasp described by Maxime Santer and his colleagues was named Diameneura marveni in honor of Marven "for his appearances in several palaeontology documentaries".

[23] In 2024, an Oligocene-aged fossil thylacine relative, Ngamalacinus nigelmarveni, was named after Marven "for his lifetime dedication to inspiring young paleontologists through his unique and daring style of presenting documentaries on ancient life.