Fish Larvae Smell Their Homes

Written by on August 29, 2013 in Fish, Marine Life

Daily Summary

New species of ‘walking’ shark discovered
A new species of bamboo shark, Hemiscyllium halmahera, was discovered off the coast of Indonesia. This shark lives on the seafloor and uses its fins to ‘walk’ along the bottom where it preys on invertebrates and small fish. You can tell this shark apart from its closest relative, Hemiscyullium galei, by the large, elongated dark spots on its back. Watch this video to see it walking!

Tropical ocean key to global warming ‘hiatus’
The global warming hiatus–a slowdown in the rise of average temperatures–began around 1998. The results of a new study support the idea that the hiatus is a result of cooling in the tropical Pacific Ocean. Cooling in the equatorial Pacific that affects as little as 8 percent of Earth’s surface is strong enough to offset the rise in global temperatures cause by an increase in greenhouse gasses. It also can explain the trends that defy the hiatus like the continuing decline of Arctic sea ice.

Wake Up and Smell The Reef: Fish larvae sniff their way back home
New research reveals that tiny fish larvae can actually smell the presence of coral reefs from several kilometers away. They use that smell to find their way back home. This is the first study to show that fish can smell coral reefs in the wild, not just in controlled lab settings. These findings mean we have to now account for the impact that human activities might have on smells in the ocean.

Cardinalfish (pictured) use olfactory cues to find their way back home.

Cardinalfish (pictured) use olfactory cues to find their way back home. Photo credit: richard ling via photopin cc.

Copyright © 2013 by Marine Science Today, a publication of Marine Science Today LLC.

About the Author

About the Author: Emily Tripp is the Publisher and Editor of MarineScienceToday.com. She holds marine science and biology degrees from the University of Miami's Rosenstiel School of Marine and Atmospheric Science. She is also a PADI diver and dog lover. .

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