Why fish have gills
By: Miriam Baker
Fish have gills to allow them to take in oxygen from the water around them. Gills allow a fish to ‘breathe’ underwater, just as other animals have lungs to allow them to breathe air on land. Unlike mammals such as dolphins and whales, fish...
How some fish drink water
By: Rob Price
Do fish actually drink water? The answer may surprise the reader, but it depends upon the type of fish being discussed. Fresh water fish do not drink water, but rather absorb the water through their skin and gills. However salt water fish do drink...
Why scientists are studying the photosynthetic sea slug
By: Lisa Piper
Biologists have been studying an unusual kind of sea slug for over 2 decades. There are many names for this slug such as leaf that crawls, eastern emerald elysia, and emerald green sea slug. The scientific name for this creature is Elysia Chlorotica and it...
Fish facts: Fish that walk
By: Jared Davidson
When most people think of fish they see a creature that lives in the water and swims around. Most people do not think about the several species of fish that can "walk" on land. These fish do not stand up and walk as must animals...
By: Wayne K. Wilkins
Scotland is currently firmly engrossed in attempting to find the cause of the mysterious deaths of nearly 100 seals that have been washed up dead on its shores in recent weeks. The seals, which did not die of natural causes, washed up ashore with a...
The life cycle of dolphins
By: Jesse Vorton
A majority of dolphins will mate during the spring and summer seasons. ‘Bull’ is the name assigned to male dolphins and ‘Cow’ assigned to female dolphins. The behavior of courting dolphins is often consists of both the male and female dolphins bumping their...
The intelligence of octopuses
By: Judith Willson
Animal intelligence can be disconcerting and especially so when it is found in relatives of snails. Cephalopods are a class of molluscs that includes octopi, squid and pearly nautilus and they have remarkably advanced nervous systems. They display sophisticated communication, an ability to learn and...
Commentary on the decline in the number of horseshoe crabs
By: Denise Calaman
There’s a disappearing act going on in the Atlantic Ocean although it is not one of magic. The American horseshoe crab (Limulus polyphemus) predates the dinosaurs and has thrived along the coastline from Maine to Mexico until recently. A lot of Mid-Atlantic beachgoers will...
An introduction to phytoplankton
By: Judith Willson
Most of the oxygen in the atmosphere is produced not by the rainforests but by tiny marine organisms. Phytoplankton collectively form the main lungs of the planet, although their importance was only realised recently. Phytoplankton are commonly known as algae and are single celled, photosynthesising...
By: Scott Jacobs - 596053
Great White sharks are sophisticated, intelligent and very deliberate predators. Once thought to be mindless feeders, Great Whites are now known to have complex senses designed into their anatomy that virtually guarantee that no prey escapes their notice. They also have developed superior strategies to...

 

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