10 most difficult sea animals riddles A list of sea animals related questions that are most often answered incorrectly Nature quiz Which turtles are the biggest?Leatherback. The leatherback sea turtle, the only extant member of the family Dermochelyidae, is the largest of all living turtles and is the fourth largest modern reptile behind three crocodilians. In the Caribbean, the mean size of adults was reported at 384 kg (850 lb) in weight. The largest ever found weighed 916 kilograms (2,020 lb).very hard 32% greengreen2%leatherbackleatherback32%aldabra giant tortoisealdabra giant tortoise16%galapagos tortoisegalapagos tortoise47%Created by: globalquiz.org. Statistics based on 6426 answers in 4 languages »reptiles riddles » Which sea turtles are the deepest divers?Leatherback turtles are one of the deepest diving marine animals. Individuals have been recorded diving to depths as great as 1,280 meters (4,200 ft). Such depths are unreachable for turtles with hard shells, as these would have been crushed by the pressure.very hard 39% hawksbillhawksbill17%leatherbackleatherback39%loggerheadloggerhead20%greengreen23%Created by: Jason Beagley. Statistics based on 9453 answers in 2 languages »zoology riddles » What kind of animal is a seahorse?A fish. Although seahorses are bony fish, they do not have scales, but rather thin skin stretched over a series of bony plates, which are arranged in rings throughout their bodies.hard 54% a fisha fish54%a crustaceana crustacean16%a mollusca mollusc22%a sluga slug6%Created by: globalquiz.org. Statistics based on 6499 answers in 2 languages »nature riddles » What is narwhal 'horn' really made of?It is a canine tooth. Usually, males have a single long tusk, the canine on the left side of the upper jaw that projects through the lip and forms a left-handed helix. The tusk grows throughout life reaching length of 3 m (10 ft). In some rare cases, both canines grow equally long, forming two tusks. In the Middle Ages, narwhal tusks were sold as unicorn horns.hard 56% it is a horn grown on its foreheadit is a horn grown on its forehead10%it is an adapted scaleit is an adapted scale5%it is a canine toothit is a canine tooth56%it is an adapted nose boneit is an adapted nose bone27%Created by: Betty. Statistics based on 11933 answers in 4 languages »teeth riddles » What kind of lobster is red when fully grown up?None. The normal coloration of lobster is dark bluish green to greenish brown, redder on the body and claws, and greener on the legs. An estimated one in 2 million lobsters are blue. All of them turn red after cooking.hard 57% American lobsterAmerican lobster19%European lobsterEuropean lobster13%Norway lobster (scampi)Norway lobster (scampi)9%nonenone57%Created by: Hitter smasher. Statistics based on 20683 answers in 2 languages »cuisine riddles » What does swordfish use their sword for?Hunting. Swordfish charge at high speeds through forage fish schools, slashing with their swords to kill or stun prey (contrary to the popular belief, they do not "spear"). They then turn and return to consume their catch.hard 57% huntinghunting57%attracting femaleattracting female13%buoyancybuoyancy13%electrical detectionelectrical detection15%Created by: globalquiz.org. Statistics based on 12849 answers in 4 languages »fish riddles » What is the inventive hunting technique of humpback whales?Bubble net. A group of whales swims in a shrinking circle blowing bubbles below a school of prey. Forage fish show a strong fear of bubbles and can be easily contained within a bubble curtain. The shrinking ring of bubbles encircles the school and confines it in an ever-smaller cylinder. The whales then suddenly swim upward through the "net", mouths agape, swallowing thousands of fish in one gulp.hard 58% bubble netbubble net58%stunning song stunning song 17%sudden chargesudden charge12%light lurelight lure10%Created by: globalquiz.org. Statistics based on 6692 answers in 2 languages »carnivores riddles » Why is this seahorse male so thick?It is pregnant. Seahorse males deliver the babies. After mating, the fertilized eggs are embedded in the pouch wall and become surrounded by a spongy tissue. The male provides oxygen and supplies the eggs with prolactin, the same hormone responsible for milk production in pregnant mammals.easy 72% it is pregnantit is pregnant72%it has swallowed an octopusit has swallowed an octopus2%it is changing skinit is changing skin5%it holds some air insideit holds some air inside19%Created by: globalquiz.org. Statistics based on 11083 answers in 4 languages »animals riddles » What color is octopus blood?Blue. Both squids and octopuses have blue blood. They use an oxygen-carrying molecule in their blood called hemocyanin that contains copper. In cold conditions with low oxygen pressure, hemocyanin oxygen transportation is more efficient than hemoglobin oxygen transportation.easy 79% redred8%blueblue79%greengreen6%yellowyellow4%Created by: Kasia. Statistics based on 20533 answers in 2 languages »blood riddles » Box jellyfish have sophisticated eyes with a lens and a retina. How big is its brain?Jellyfish have no brain. Their speed and vision leads some researchers to believe that box jellyfish actively hunt their prey. Since they have no brain, the mechanisms that could make it happen remain unknown.easy 79% about the size of a peanutabout the size of a peanut9%about the size of a wallnutabout the size of a wallnut6%about the size of a coconutabout the size of a coconut3%jellyfish have no brainjellyfish have no brain79%Created by: Paul Caspack. Statistics based on 10754 answers in 4 languages »nature riddles » Play nature quiz and see all the questions.