Mary Donahue welcomes you to her home page

Mary Donahue welcomes you to her De Anza College faculty website.

Oxygen Nitrox - DIN Male Rebreather Oxygen Dilutent Decanting Digital Assembly

I’ve been on the faculty at De Anza College in Cupertino, California, since April, 1988, first in Physical Education, then in Biological and Health Sciences as well.

pool flags:

XS Scuba Tank Rail KitScubapro - Gauge Console - Analogue 2 - Air & Depth - Scuba DivingDive Equipment 300 bar Manifold (SCUBA manifold)

I’m a Red Cross certified instructor, primarily in lifeguard training, swimming, first aid and CPR/AED. I am also a Lifeguard Instructor Trainer, CPR/AED Instructor Trainer and Water Safety Instructor Trainer.

I have been a member of the De Anza College Academic Senate Executive Committee since April 2012.

Apnea Amarok Roller 95cm SpeargunTwinset Scuba Tank Manifold - 232BAR - VGC diving

I’m proud to have been a lifeguard, lifeguard captain or in charge of the swim of 53 triathlons or open water swims.

I was retained as an expert witness in a near-drowning lawsuit. The good guys won.

I have been a volunteer with Yosemite National Park Preventative Search and Rescue since March 2014.

Safety tips are at: /psar-reports

Go to Triple Eight 8 Hired Hands Wrist Hand gaurds (Size Small) for more about my resume.

Ahwahnee lane line:

Some of the classes I teach:

I usually teach every level of swim class each year. One of my favorites is Drake Snowboard Bindings Medium. Switch Step In Technology (P.E. 26A/ KNES 001A). It’s a class for VERY beginning swimmers – including people who have never been in a pool or are even afraid to get in a pool, as well as people who can swim some, but are not confident in deep water.

Health 57A Hlth 57A, First Aid for the Community, Home, Wilderness and Disasters, is a one-unit class that is offered at De Anza almost every quarter. You can get the Red Cross certification or just take the class to learn first aid. The class meets for only four sessions, not all quarter and is done before finals week.

See the De Anza website for registration information:
Registration steps are at:

Beaver 300 Bar Twin 7 Manifold M25X2 EN-144-1Mares Womens Neoprene Reef Shorty 2.5mm Wetsuit - Size ChoiceMDE Pressure & Depth Gauge

I teach the American Red Crosscertification class and an occasional Lifeguard Instructor certification class off campus.

Beaver 232 Bar Twin 5.5 Cylinder Manifold M26 Thread M25x2 EN144-1


“Those who can, do. Those who believe others can also, teach.”

John E. King in Captive Notions

Scubapro Compact Twin Gauge Console Scuba Diving

“When you learn, teach. When you get, give.”

Maya Angelou


Contact Info: I prefer that my students talk to me in person in class.

When I am in town I usually check my email at least twice a day.

SSI Spare Air Regulator Assembly.

CORDA NAUTICA rossa D 2mm-20mm L 10-100m polipropilene fune cima cavo filo


What I’ve been up to lately:

Monterey ocean kayak day trip May 2019

Yosemite winter trip 2019

Women Pants Warm Thermal Cotton Soft Winter Waterproof Windproof Winter Ski Suit

Grand Teton National Park 2018

Golden Gate Sharkfest July 22, 2018

May 2018 Monterey kayak adventure

February 2018 Yosemite trip

fall quarter 2017 Monterey ocean kayak day trip

Grand Teton National Park between-summer-and-fall-quarters 2017 trip:
Total Solar Eclipse in Grand Teton National Park

Volunteering at the 2017 Escape from Alcatraz Sharkfest swim.

2017 Monterey Bay kayak spring break trip

Yosemite National Park Outdoor Club

Mares Scuba Diving Wetsuit Man Sub One-Piece Suit Neoprene Pioneer 5mm 4UK

De Anza College Outdoor Club Monterey kayak trip March 26 2016

Yosemite winter camping trip 2016

Yosemite winter camping trip 2015

monterey kayak March 2014

2014 Yosemite winter trip

ocean kayak October 2013 group photos

lifeguards at the Silicon Valley Kids Triathlon 2012

De Anza College Outdoor Club Grand Teton trip 2010

lifeguards at the Escape from Alcatraz Alcatri 2010

Innovative Marine 12-in. Stainless Steel cimeter Granton Knife w SheathScuba Diving Vintage Scubapro Breakers - Divers-Knife very rare item

waterfront lifeguard practice May 16, 2010

BARE Nixie Full 3 2mm Diving Suit Size XS - XL Women's Wetsuit

De Anza Outdoor Club Yosemite winter trip 2010

2009 Grand Teton trip

Ladies Profile Wetsuit Scubapro 5mm Free Shipping

Yosemite Falls view in February snow and other seasons

Newest webpages (besides the photo pages above) :

Yosemite National Park regulations, policies and rules links

Yosemite Camp 4 map

Parking and traffic jams in Yosemite valley tips and tricks

Yosemite valley tent cabins tips and tricks

Essay on one of the five components of fitness

They were just taking a selfie . . .

First Aid Facts and Fallacies

Swimming in Yosemite National park

write this in your Red Cross lifeguarding instructor’s manual

write this in your Red Cross Lifeguarding manual

tips for guarding kids’ triathlons

Hands only CPR

Do it yourself earthquake preparedness

emergency information form

IST Commercial Diving Bell Harness with Standard Webbing Credch Straps

Cultural issues in first aid

Yosemite Valley Free Shuttle Bus

an eight person tent holds this many campers


History of lifesaving

Just another day at the home office

Do AEDs work?

First Aid for Public Safety Personnel study guide

Swim workout vocabulary


Item specifics

New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging is ... Read moreabout the condition
Brand: Scubapro
Bladder Retraction System: Used to pull in sides of the bladder during deflation Country/Region of Manufacture: Italy
Adjustable Chest Straps: Adjusted for personal comfort The Wrapture™ Harness System: Shoulder swivel buckles, valve retention strap etc
Scooped Octo-Pocket: Easy to stow and deploy an octopus. GripLock™ Tank Band System: Makes attachment to a cylinder easier
Pockets: Large, Easy-To-Access, Utility Pockets Streamlined Air Cell Design: One of the most streamlined jacket s
Knife Attachment Points: Found on the left lobe Includes Low Profile Flat Valves: Reduce drag when moving through the water
Large Pull Bobs: Easy to find and grip SureLook II Weight Pouches: Simple, single-pull release
Attachment points: 6 Stainless Steel D-rings & 1 Plastic D-rings Fixed Pockets On The Tank Band: Increase weight capacity and help provide proper trim
Pull Dump: Easy to locate and use
Aqua Lung Axiom BCD Dive Scuba

California Lifeguards and Title 22

How to find the location of John Muir’s cabin (hang nest) in Yosemite Valley

Road trip advice and etiquette

ION Muta Intera Bifoderata Strike Element 2018

In early 2016 the server for the first De Anza College faculty websites was near failing and faculty were told to move their websites off of it. As I have the time I will finish fixing links to and within pages.

I am the webmaster for this website.

In late October 2006 the original De Anza College version of my faculty website, one of the first at De Anza, received its one millionth hit. April, 2008 it received its two millionth hit. In late 2009, the three millionth. In late 2010 it had four million hits, in late 2011 five million. In March 2016 the server was failing and I moved the faculty website here.

SMACO 2-in-1 0.5L S300 Scuba Diving Oxygen Cylinder + Scuba Tank Refill Adapter


To find subjects at this site, try my Site Index

Storm Men's 7mm 2 Piece Step-In Scuba Wetsuit - XXX-Large


I take great pride in ensuring the accuracy, correctness, completeness and reliability of the content of this website, but I make no representations or warranties as to the content’s accuracy, correctness, completeness or reliability. The website may contain inaccuracies, out-of-date information / links, typographical errors, or other errors or omissions. Also, unauthorized additions, deletions, or alterations could be made to the website by third parties without my knowledge. If you believe that information found on this website is inaccurate or unauthorized, please let me know.

Light and Motion Sola Dive 800

There are links to other websites from my website; however, these other websites are not controlled by me and I am not responsible for any content contained on any such website or any loss suffered by you in relation to your use of such websites. You waive any and all claims against Mary Donahue, the De Anza College Outdoor Club, De Anza College and/or the De Anza Foothill College District regarding the inclusion of links to outside websites or your use of those websites.