Beach
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172 free Beach trivia questions with answers — nature quiz, new questions added Oct 2026.
15 free beach trivia questions with answers. Ready to dive into the world of beaches? Our Beach trivia quiz will test your knowledge of everything from sandy shores to ocean waves. Whether you're a beach enthusiast or just looking for a fun challenge, discover fascinating facts about coastlines, marine ecosystems, and popular beach destinations around the globe.
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Q 01Geologically, a beach is a landform beside a body of water made up of what?
Loose particles
Loose particles, from fine sand to pebbles and broken shell, make up every beach, which is why beaches range from powdery white to cobbled grey.
Q 02Which crustacean digs deep burrows just above the tide line on open sandy beaches?
Ghost crab
Ghost crabs are pale, sand-coloured and mostly active at night, so they seem to vanish as they dart between their burrows; older crabs may dig in as far as 400 m from the sea.
Q 03Which natural warning sign means a tsunami may be only minutes away?
The sea draining far offshore
The sea draining far offshore can be the trough of a tsunami arriving first. On a Phuket beach in 2004, ten-year-old Tilly Smith remembered a geography lesson on tsunamis and got about 100 people to safety.
Q 04Which Brazilian beach, running over 200 km to the Uruguayan border, is often billed as the world's longest?
Praia do Cassino
Praia do Cassino runs from the Rio Grande breakwaters to the Uruguayan border at Chuí; because of the coastline paradox, estimates of its length range from about 212 to 254 km, so the title stays disputed.
Q 05Which type of radiation from the Sun causes sunburn?
Ultraviolet
Ultraviolet rays reflect off sand and water, which adds to a beachgoer's dose, and a significant share still passes through cloud on an overcast day.
Q 06Which blue-blooded 'living fossil' crawls onto Delaware Bay beaches in huge numbers each year to lay its eggs?
Horseshoe crab
Horseshoe crabs are closer kin to spiders and scorpions than to true crabs, and an extract of their copper-based blue blood is used to test injectable drugs for bacterial contamination.
Q 07Venice Beach, with its Muscle Beach gym and street performers, is a neighbourhood of which US city?
Los Angeles
Los Angeles absorbed Venice in the mid-1920s; developer Abbot Kinney had founded it in 1905 as 'Venice of America', digging miles of canals and putting gondoliers on them.
Q 08Which landmark does Charlton Heston's astronaut find half-buried on a beach at the end of Planet of the Apes?
The Statue of Liberty
The Statue of Liberty reveals that the 'alien' planet was Earth all along; the scene was shot in a cove near Point Dume in Malibu, with a matte painting blended into the real cliffs.
Q 09Black sand beaches near volcanoes are built from tiny fragments of which dark rock, shattered when lava meets the sea?
Basalt
A big lava flow hitting the ocean can build a brand-new black sand beach almost overnight. The lava shatters on contact with seawater into tiny fragments of basalt.
Q 10On a dark beach, newly hatched sea turtles find the ocean by crawling toward what?
The brightest horizon
The brightest horizon used to be the sea, lit by the moon and stars, so hatchlings headed for it; now lights from buildings and streets can draw them inland instead.
Q 11Which country boasts the longest coastline in the world?
Canada
Canada's coast fronts three oceans and winds around some 52,000 islands, which is how it outruns every other country; estimates run from about 202,000 to 265,000 km depending on the measuring scale.
Q 12What natural phenomenon causes some beaches to glow at night with a blue, ethereal light?
Bioluminescent plankton
Bioluminescent plankton — dinoflagellates such as Noctiluca — flash blue when disturbed by a wave or a footstep, which is why the glow is strongest along the surf line.
Q 13Which mineral gives Hawaiʻi's Papakōlea Beach its green sand?
Olivine
Q 21Which New Zealand beach is officially designated a public highway?
Ninety Mile Beach
Ninety Mile Beach is only about 55 miles (88 km) long; one story blames early travellers who took three days to cross it and reckoned on covering 30 miles a day.
Q 22Cox's Bazar in Bangladesh is named after an officer of which organisation?
The British East India Company
Captain Hiram Cox of the British East India Company was made superintendent of the Palongkee outpost to resettle Arakanese refugees, and the market town took his name.
Q 23Beach volleyball most likely began in 1915 at which beachfront venue?
The Outrigger Canoe Club
Olivine crystals wash out of the old volcanic cone behind Papakōlea; being denser than the ash around them, they stay on the beach while lighter grains are swept out to sea. Gem-quality olivine is peridot.
Q 14Cape Hatteras and most of the Outer Banks barrier islands belong to which US state?
North Carolina
North Carolina's Outer Banks were the last refuge of the pirate Blackbeard, who was killed in a battle at Ocracoke Inlet in 1718.
Q 15Which Californian beach is home to the Wedge, a famous bodysurfing shore break?
Newport Beach
The Wedge sits at the tip of Newport Beach's Balboa Peninsula, where waves rebounding off the harbour jetty combine into steep peaks that can top 20 feet.
Q 16Which Sydney beach's surf lifesaving club is officially recognised by Surf Life Saving Australia as the first ever formed?
Bondi Beach
Bondi Beach bathers formed their club at the Royal Hotel in February 1907; Bronte claims an earlier start in 1903, but in 2005 a panel of Surf Life Saving Australia historians ruled for Bondi.
Q 17Which landscape architect designed Copacabana's black-and-white wave-pattern promenade?
Roberto Burle Marx
Roberto Burle Marx kept the old Portuguese-style waves when the promenade was rebuilt around 1970; the pattern was first laid in a Lisbon square in the 19th century, long before it reached Rio.
Q 18The name Waikīkī means what in Hawaiian?
Spouting fresh water
Waikīkī means 'spouting fresh water': springs and streams once fed wetlands that separated the beach from the interior, until the Ala Wai Canal drained them in the 1920s.
Q 19In the 1920s and 1930s, sand for eroding Waikīkī was shipped in from where?
Manhattan Beach, California
Manhattan Beach, California, was levelling its dunes for building, so the Kuhn Brothers construction firm sold the spare sand to Hawaiian developers and shipped it across the Pacific over about ten years.
Q 20Which Queensland beach is famed for dazzling sand that is almost pure silica?
Whitehaven Beach
Whitehaven Beach's silica is not found in the local rock, so the sand is thought to have been carried in by ocean currents over millions of years; it also holds little heat, so it stays comfortable under bare feet.
The Outrigger Canoe Club on Waikīkī is where members are said to have strung a net on the sand in 1915; the two-a-side game followed in 1930, when only four players had shown up for a six-a-side match in Santa Monica.
Q 24Beach volleyball has been an Olympic sport since which Games?
Atlanta 1996
Atlanta 1996 put the Olympic debut on an inland site, Clayton County International Park, rather than a real coast; American Karch Kiraly won the men's event to add to his two indoor Olympic titles.
Q 25Louis Réard named his 1946 swimsuit the bikini after an atoll where what had happened four days earlier?
A nuclear bomb test
A nuclear bomb test at Bikini Atoll on 1 July 1946 gave Réard his name; rival Jacques Heim was already selling the 'world's smallest bathing suit', the Atome, so Réard advertised his as smaller still.
Q 26What was Louis Réard's profession before he introduced the bikini?
Automotive engineer
An automotive engineer by training, Réard was running his mother's lingerie shop in Paris; no fashion model would wear his design, so he hired Casino de Paris nude dancer Micheline Bernardini to show it.
Q 27Where did Sebastian Steudtner ride his Guinness-certified 26.2 m (86 ft) wave in 2020?
Nazaré, Portugal
Nazaré, Portugal, owes its giants to an undersea canyon that funnels Atlantic swell toward Praia do Norte; Guinness ratified Steudtner's October 2020 ride as the largest wave ever surfed.
Q 28Surfing made its Olympic debut at which Games?
Tokyo 2020
Tokyo 2020 staged surfing at Tsurigasaki Beach in Chiba, and organisers brought the finals forward to catch the swell from Tropical Storm Nepartak.
Q 29Which sunscreen brand is named after the Alpine peak where chemist Franz Greiter was reportedly sunburnt in 1938?
Piz Buin
Piz Buin grew out of the Gletscher Crème, or Glacier Cream, that Greiter launched in 1946 after his climb; he went on to introduce the SPF rating used on sunscreen bottles.
Q 30'Red Vet Pet', an early sunscreen made for US troops in the Pacific in 1944, later became which brand?
Coppertone
Coppertone turned the red veterinary petrolatum into a marketable lotion, then sold it with its famous advert of a puppy tugging at a little girl's swimsuit to reveal her tan line.