Mantis shrimp. Called "sea locusts" by ancient Assyrians, "prawn killers" in Australia and now sometimes referred to as "thumb splitters" – because of the animal's ability to inflict painful gashes if handled incautiously – mantis shrimp sport powerful claws that they use to attack and kill prey by spearing, stunning, or dismemberment.
Although it only happens rarely, some larger species of mantis shrimp are capable of breaking through aquarium glass with a single strike from this weapon. Ecology These aggressive and typically solitary sea creatures spend most of their time hiding in rock formations or burrowing intricate passageways in the sea bed. They either wait for prey to chance upon them or, unlike most crustaceans, at times they hunt, chase, and kill prey.
They rarely exit their homes except to feed and relocate, and can be diurnal, nocturnal, or crepuscular, depending on the species. Classification and the claw True facts about the cuttlefish. Ichthyology. Ichthyology (from Greek: ἰχθύς, ikhthus, "fish"; and λόγος, logos, "study") is the branch of zoology devoted to the study of fish.
This includes skeletal fish (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). While a large number of species have been discovered and described, approximately 250 new species are officially described by science each year. According to FishBase, 32,200 species of fish had been described by March 2012. There are more fish species than the combined total of all other vertebrates: mammals, amphibians, reptiles and birds.  History Fish represent approximately 8% of all figurative depictions on Mimbres pottery.
The study of fish dates from the Upper Paleolithic Revolution (with the advent of 'high culture'). 1500 BC–40 AD 335 BC–80 AD European Renaissance 16th–17th century Frontipiece from Ichthyologia, sive Opera Omnia de Piscibus by Peter Artedi. Marine biology. Only 29 percent of the world surface is land.
The rest is ocean, home to the marine lifeforms. The oceans average nearly four kilometres in depth and are fringed with coastlines that run for 360,000 kilometres. A large proportion of all life on Earth exists in the ocean. Exactly how large the proportion is unknown, since many ocean species are still to be discovered. The ocean is a complex three-dimensional world covering about 71% of the Earth's surface. Marine life is a vast resource, providing food, medicine, and raw materials, in addition to helping to support recreation and tourism all over the world.
Many species are economically important to humans, including food fish (both finfish and shellfish). Science of Sound Summary. Sea Creatures. Census of Marine Life. It is the world's largest census, but hasn't been completed yet and probably never will be.
The Census of Marine Life, an international project involving hundreds of researchers, has recorded some 185,000 different species so far, from tiny single-cell creatures to the blue whale. The majority of life on our planet swims or crawls in the oceans. The "Catalogue of the Seas" produced by the census won't be published until October. But much of the research can already be accessed in the scientific journal PloS ONE, published by the Public Library of Science, a non-profit organization of scientists. Marine Life of 2010. Whale Dissection. Explore the Abyss. Fishbase.
Dolphins. Whales. Fish/Sharks. Dangerous and Deadly Sea Creature Photos. Marine. Octopus Walks On Dry Land. Sea Turtles. Siphonophores. 15 Deadliest Beach Creatures. Keep away from any of these 15 deadly creatures when you next visit the beach. 1.
Portuguese Man-of-War Jellyfish Not a true jellyfish, the Portuguese Man-of-War is a siphonophore – a colony of organisms living together. Found mainly far out in the sea, it can be seen swarming or floating with thousands of organisms grouped together. Dermochelys coriacea, commonly called leatherback sea turtles, feed on these sea creatures. Source 2. The Marble Cone snail shell looks beautiful but the sea creature inside is deadlier than any other possible beach inhabitant listed here. Source 3. Ocean-going trawlers are where most sea snake bites occur since the snake can be hauled in along with desirable catch. Source 4. The marine snail which inhabits cone shells are found in reefs all around the globe. Source 5. The Dornorn, commonly called the “stonefish” is among the most venomous beach creatures on the planet. Source 6. Source 7. Source 8. 9. This huge hornet can reach three-inches in length. Source 10.