News Home Video Gallery Newsletters Photo Gallery Cruising Int
Sail-World.com : California's sea lion invasion - just too heavy for the marinas!
California's sea lion invasion - just too heavy for the marinas!


'Sea lions take over Ventura docks'    .

Different yacht clubs and marinas round the world have a range of problems - pollution, storm damage, the cost of renewal - in California, the biggest issue could be - sea lions. Not because everyone doesn't love watching them, but because they are so heavy they can cause tilting and major damage to the docks. Catherine French, writing for The Log, here writes about these great attractions for visitors:

Since 1972, the National Marine Fisheries Service has been charged with protecting whales, dolphins, porpoises, seals and sea lions through the Marine Mammal Protection Act. The act was in response to many years of hunting whales for their blubber; and seals and sea lions for their fur. Since then, the population of California sea lions has recovered and more than 250,000 live and forage in the California bight and use the offshore Channel Islands for breeding.

According to Ventura Harbormaster Scott Miller, on March 19, 51 sea lions hauled out on one of the floating docks at Ventura Harbor Village Marina. An adult female sea lion weighs about 250 pounds and adult males can weigh 600 to 1,000 pounds each.

Miller explained that the docks are not designed to support such a heavy load.

Last year, the Channel Islands National Park Service had a similar problem, with 30 to 50 males lounging daily on two of their boat docks, causing major tilting and other damage. The Park Service finally installed Seal Stop star-shaped devices that deter sea lions from getting on docks or boats.

'At first, we tried installing a sprinkler system with a motion sensor. The park had tried this before, and it worked for a while. But when we installed one at the marina docks, the sea lions didn’t seem to mind and hauled out on the docks anyway,' Miller said.

Like humans, sea lions can catch cold and need to haul out of the ocean to warm up or thermal-regulate their body temperature, an activity that is critical to their survival.

For many years, sea lions created havoc for boat owners at Pier 39 in San Francisco Bay. Sea lions literally took over the docks.

However, since the mammals drew so many visitors, the city removed some of the commercial and recreation docks and converted them into a series of specially constructed floats that could withstand the weight of 20 to 30 adult sea lions per float.

'We looked into the cost of installing Seal Stop, and for about $6,000 in cost we could only take care of two fingers in the marina, 'explained Miller. The cost of outfitting the entire marina would be more like $90,000.

Currently the two floating finger docks that held the heavy mammals for several days are tweaked from carrying their excess weight. As of April 2, there were only a few sea lions on the marina’s floating docks.

'Right now, the sea lions have left, for the most part. If they come back in large numbers, we plan to try erecting two by fours on the docks, making it less inviting or the animals to haul out,' Miller said.

Read The Log for all California's boating and fishing news


by Catherine French, The Log/Sail-World Cruising

  

Click on the FB Like link to post this story to your FB wall

http://www.sail-world.com/index.cfm?nid=108350

8:22 PM Thu 11 Apr 2013GMT


Click here for printer friendly version
Click here to send us feedback or comments about this story.







Cruising USA































Estimating the diversity of life by Australian Institute of Marine Science,














Will your lifelines pass this sailing test? by Captain John Jamieson, Florida


Aventura's passage to Annapolis by Cornell Sailing,






Earth Wind Map - with typhoons by Sail-World Cruising,














Canadian shipwreck discovery solves 170-year-old mystery
British couple help stranded Syrian refugees to safety
Blue Planet Odyssey yacht completes Northwest Passage transit
World ARC fleet embarks on leg 11, across the Indian Ocean
Pantaenius and Camper & Nicholsons Marinas become strategic partners
How to make a distance scale for faster navigation
New maps of the polar regions reveal unseen world beneath the ice
Naval Commanders talk on-going piracy threat at sea
Erie, Pennsylvania - Small place, big boating
EU Naval Force frigate, ESPS Navarra aids yacht in the Gulf of Aden
Insurance, towing and safety 'provisions' reminder for snowbirds
A guide to steering without a rudder + Video - a must read and watch!!
You scratched my seagrass!
Cocos Keeling Islands - Yet another paradise for the World ARC fleet
Hurricane Odile: Two Brits missing in Mexico after yacht overturns
Sailor texts girlfriend for help after yacht sinks in Bristol Channel
Gas safety: don’t let it go off the boil
Arctic sea ice summer minimum 2014: A scientific perspective
British Virgin Islands, a taste of Caribbean cruising
The Galley Guys take on the Vancouver International Boat Show
Are you ready to enter that marina?   
Cruising the Bay of Quinte and Thousand Islands   
Ten safe and clean refueling tips for boaters   
World ARC fleet moored at Christmas Island   
Blue Planet Odyssey welcomed to Bora Bora   
Remember to properly dispose of obsolete distress beacons   
Blue Planet Odyssey - Aventura makes landfall in the US   
World ARC fleet bids farewell to Bali   
Antarctic Team discovers mechanism for massive ice shelf collapse   
Baltic 4 Nations - Next edition sets sail July 2015   
BoatUS offers 'Boater's Guide To Winterizing'   
Yachts prepare for second Atlantic Odyssey, departing this November   
Thai drama with Phuket yacht clampdown   
Sailing Rallies launch two new events at PSP Southampton Boat Show   
World ARC crews in Bali   
Could your sailing navigation use a tune-up?   
Images of marine sunsets by Tripadvisor   
Citizen science model proposed to fill fundamental ocean data gap   
Ocean Cruising Club celebrates 60th Anniversary with record gatherings   
The Boat Cookbook   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph contact the photographer directly.
XLXL NEW Cru USA
LocalAds   DE  ES  FR  IT