Oceans - Science Articles and Facts
- Sharks, Seabass Rebound After Fishing Banned
- Tuna Fishery Traps Dolphins, Birds and Sharks
- New Fish Arrives in Arctic Ocean
- Rising Atlantic Erodes Waterfront Real Estate
- Oceans Gaining Ground at Unusually Rapid Rate
- Species Shift Distorts Marine Food Web
- Sea Life Flourishes On Sunken Ships
- Pacific Fish Have Gotten Smaller
- Rockfish Caught Near Salmon Farms High in Mercury
- United States Ocean Temperature Averages
- Wild Adult Salmon Aren't Exacerbating Lice Epidemic
- Juvenile Salmon Succumb to Sea Lice
- Record Wild Salmon Return - Despite Sea Lice
- Migration No Longer Separates Salmon From Sea Lice
- Pink Salmon Competition Reduces Chinook Survival
- Chinook Salmon Rapidly Colonize Rivers
- Tenacious Sea Squirt Invades North American Waters
Big fish have returned to California's southern coast following a 15-year ban on gill net fishing.
Fishing for tuna in the eastern North Atlantic took a heavy toll on marine animals during the 1990s.
One marine animal has quickly taken advantage of the recent rise in northern ocean temperatures.
Although the Atlantic Ocean is rising by only a fraction of an inch each year, scientists warn that the increase is enough to radically change the coastline of the northeastern United States in coming decades.
Global warming has recently accelerated the pace of rising sea water.
The ocean�s interlinked food web of photosynthesizers, grazers, predators and detritus recyclers is being reconfigured.
After sinking 18 ships off British Columbia�s southern coast for recreational diving, the question arises as to whether the overall ecological benefits of the artificial reefs outweigh the losses.
The size of fish living near the ocean floor along the Pacific coast of the United States has declined dramatically in two decades.
Mercury concentrations are elevated in copper rockfish and quillback rockfish taken near salmon farms along British Columbia�s coast.
Typical ocean temperatures at cities and beaches along the Atlantic, Gulf and Pacific coasts of the United States.
Salmon Research
Marine biologists were surprised to find that the numbers of sea lice on juvenile salmon didn't climb when louse-infested wild adults swam by on their way to spawning.
It only takes a few sea lice to kill juvenile pink and chum salmon, and most louse-infested fish die.
A record 34% of pink salmon fry from rivers flowing into Kingcome and Knight Inlets in British Columbia survived at sea and returned to spawn in 2004.
Analyses of several sets of data finds mortality rates of 9 to 95% among various juvenile wild salmon populations as they migrate past salmon farms east of Vancouver Island.
Young chinook salmon fair poorly when competing with large numbers of pink salmon.
Invasive Species
It's taken less than thirty years for chinook salmon that were let loose in South America to establish spawning runs along 1500 kilometres of the South Pacific coast.
Scientists warn that an aggressive sea squirt could wreak ecological havoc to marine environments and economically harm the aquaculture and fishing industries.