All news on the topic: Marine Life

The jellyfish has an unusual red cross which can only be seen from above, and is so rare it has been difficult for them to capture further specimens from the umbrella-shaped translucent species

The mysterious creature looked like it had four limbs, an elongated head and a row of sharp teeth. It was discovered washed up on the shore at Pico de Oro Beach in Mexico

Caroline Pindar, 61, was exploring rock pools on a north Yorkshire beach when she saw the huge faceless sea monster that she described as being the size of three people

A nine-foot-long sea creature with razor sharp teeth has been pulled from the water by a fisherman in Australia. The beast has been likened to something from a "horror movie"

One of these giant trawlers is the 95-metrelong Dutch ship Dirk Dirk, which is capable of plundering thousands of tons of fish, has just spent days off the coast of Brighton

A picture of the bright blue life form, washed up on Dundee Beach near Darwin, Australia, shows its short tentacles and shiny body comparable to a disco ball

The marine creature washed up on the North Wales coast was a deadly Portuguese man o’war which was discovered by dog walkers on Porth Dafarch beach, Anglesey. People have been warned to stay clear of them

The dolphin was found deeply wedged in reeds close to a village in Cambridgeshire and, despite efforts to cut back the plants and administer first aid, was euthanised on welfare grounds

The 'fearsome predators' are often mistaken for jellyfish but carry a poison in their long tentacles which can paralyse and kill small fish - and in some rare instances, even cause human fatalities

Colonies of bizarre-looking jellyfish like creatures known as by-the-wind sailors have washed up on beaches at Islay in the Inner Hebrides, confusing beachgoers

A monster from the depths of the ocean armed with rows of teeth was discovered washed up on the beach by a shocked family, before an expert revealed its surprising identity

Thought to be harbingers of an oncoming natural disaster, a huge Russell's oarfish was spotted near the ocean surface off the coast of Taiwan as stunned divers rushed to grab a picture

A group of scientists gutted an enormous 43ft, 20 tonne sperm whale after it washed up on Nogales Beach on the Spanish Canary Island of La Palma in mid-May - but have now discovered that the ambergris they found inside is worth a whopping £394,000

Sea temperatures around the UK are creeping up, marine scientists have warned, which could have devastating impacts on wildlife and make bathing more toxic to humans and dogs

Anat Primo, who usually lives in Chiang Mai, Thailand, was wandering along a beach on the paradise island of Ko Lanta when she spotted the grisly remains of a sea creature that resembled "something out of a horror movie"

The salty underwater lakes - just 1.25 miles off the coast of Egypt - are one of the most extreme environments on Earth, and are thought to have been formed millions of years ago

The unusual creature - known as Babakina anadoni - is usually found in warmer waters, but has recently been found by divers around the UK with the first sighting in August last year

Marilyn Inglis, 72, came across the animal while taking a stroll along a beach in West Sussex - and has since noted its striking resemblance to another creature found on the coast of Dorset

Dr Joseph Dituri is one month into a 100-day mission to test how the human body is affected by long-term exposure to extreme pressure, and claims to have come across a new organism

Great white shark Breton weighs 1,437lb and is 13 ft and 3 inches long - he is seen along with more than a dozen other sharks roaming near the open-sea beaches of the Outer Banks, North Carolina

Roman Fedortsov, who works on a trawler in Murmansk in the northwest part of Russia, spends his time uncovering creatures from the deep and sharing his bizarre catch with his followers on Instagram

The blue-ringed octopus may look tiny but its venom packs a punch, with tetrodotoxin being strong enough to kill 20 humans by paralysing the body and stopping the victim from being able to breathe

The giant mammal, nicknamed Thor, was pictured snoozing on a floating harbour by Icelandic fisherman as he supervised one of his fishing boats in Breiddalsvik on Friday morning

Beautiful white-sided dolphins and a 56-year-old lone orca can be seen swimming in circles, stuck in tiny pools at Miami Seaquarium in Florida, just metres from the ocean

The oarfish was the first reported sighting in Ecuador this year. When they are seen it can be caused by storms washing them towards land and are believed to be a sign earthquakes or tsunamis