Scuba diving while pregnant is a question we hear from couples who booked a dive holiday months ago, then found out they are expecting. It also comes from worried divers who dove before they knew.
This guide is for anyone who is pregnant, trying to become pregnant, or recently gave birth. We are a dive shop, not doctors, so we share what the Divers Alert Network (DAN) says, what the dive medical form says, and what you can still enjoy on the trip. Questions about your own pregnancy belong with your physician.
Is scuba diving while pregnant safe?
Quick answer: No dive authority recommends it. DAN concludes that diving during pregnancy likely raises the risk to the baby and that the prudent course is to avoid diving while pregnant. The dive medical questionnaire also says not to dive if you are pregnant or trying to become pregnant. Ask your doctor about other activities.
What DAN says about diving and pregnancy
DAN’s position is plain. In DAN’s article on pregnancy and diving, the authors conclude that diving during pregnancy likely increases fetal risk, even if the effect may be small. Their summary is that “the prudent course is to avoid diving while pregnant.”
DAN also says nobody can put a number on the risk of any single dive, because the data do not exist. That gap is itself a reason for caution.
Diving and pregnancy risks: why the advice is no
Every dive puts extra nitrogen into the body, and small bubbles can form on the way up. In an adult, the lungs filter most of these bubbles out. DAN explains that a baby’s blood largely bypasses its lungs before birth, so bubbles may pose a greater risk to the fetus.
What the studies show, and what they cannot
DAN describes animal studies in which pressure exposure was linked to limb, skull and heart problems in the young, though results varied. It also cites a small survey that found birth defects in 5.5 percent of 109 women who dove while pregnant and none among 69 who did not. The authors point out the small sample and that a survey cannot prove cause.
Better human studies are unlikely, because no one can ethically ask pregnant women to dive for science, so the conservative advice stands.
Changes in your own body
DAN’s page on women’s health and diving adds practical concerns for the mother. Pregnancy changes how fluid is spread through the body, which may affect gas exchange. Swelling can make ears and sinuses harder to clear, and morning sickness on a rocking boat can lead to nausea and, in the water, panic.
DAN also asks you to think about treatment. If a pregnant diver were injured, recompression treatment could itself affect the baby.
What the medical form says about pregnancy
Before any scuba program, every student fills in the Diver Medical Participant Questionnaire. It is direct on this point: if you are pregnant, or trying to become pregnant, do not dive. Our guide to the scuba diving medical questionnaire and physician sign-off walks through the whole form.
That applies to a single try-dive as much as a full course. If your plans change after you book, tell us.
| Situation | What the source says | Source |
|---|---|---|
| Pregnant or trying to conceive | Do not dive | Diver medical questionnaire |
| During pregnancy | The prudent course is to avoid diving | DAN, pregnancy and diving |
| Dove before you knew | Insufficient evidence to warrant ending a pregnancy; talk to your doctor | DAN, pregnancy and diving |
| After a vaginal delivery | A good rule of thumb is to wait four weeks before diving | DAN, women’s health and diving |
| After a C-section | Wait at least eight weeks before diving | DAN, women’s health and diving |
| After a complicated pregnancy | Return may be delayed; medical screening and clearance advisable | DAN, women’s health and diving |
| Breastfeeding | No reason to avoid diving, unless there is breast infection or inflammation | DAN, women’s health and diving |
If you dove before you knew
This is a common worry, since many people learn they are pregnant weeks after conception. DAN states there is “insufficient evidence to warrant termination of a pregnancy” after such dives, and it notes reports of women who dove while pregnant without complications. Tell your doctor or midwife about the dives so they can advise you.
Can you dive when pregnant on a trip? Try these instead
A pregnancy does not have to cancel the holiday. Much of the color and fish life on a shallow reef can be seen from the surface. Ask your doctor first whether snorkeling and boat trips suit you and your stage of pregnancy.
- Snorkeling at the surface, where you breathe normal air through a tube and never go under pressure. Our guide to snorkeling vs scuba diving on Ambergris Caye explains the difference.
- Snorkel trips to Hol Chan and Shark Ray Alley or to Mexico Rocks, both on our local trip menu.
- Land days, such as the jungle river trip to the Lamanai Mayan ruins on our Maya tours and jungle trips page.
- A partner can still dive or take a course while you snorkel. See our guide to learning to dive on Ambergris Caye.
Have you heard that a shallow dive is fine early on? No authority we know of supports that claim. Our guide to common scuba diving myths and the facts behind them sorts out several others.
Returning to diving after the baby
DAN gives rules of thumb, not a fixed schedule. After a vaginal delivery, it says a good rule is to wait four weeks before diving. After a C-section, it advises waiting at least eight weeks, to allow the wound to heal and fitness to return.
Moderate or severe complications, such as twins, preterm labor, high blood pressure or diabetes, may delay the return further. In those cases DAN says a medical screening and clearance are advisable. Your physician, not a dive shop, decides when you are ready.
If it has been a while since your last dive, a scuba refresher course on Ambergris Caye is a gentle way back in. On breastfeeding, DAN sees no reason to avoid diving unless there is an infection or inflammation of the breast.
Diving with White Sands Dive Shop later
White Sands Dive Shop is a 5 Star PADI Dive Facility on the beach in San Pedro, owned and operated by PADI IDC Staff Instructor Elbert Greer. When you are cleared to dive again, you will find every course and current course prices on our Water Sports page.
Families trust Elbert with their own. Bryan Nelson wrote that a friend told them they had “managed to find perhaps the best possible open water instructor” for Sam’s certification dives, and you can read more in the letters from Elbert’s dive students.
Scuba diving while pregnant: your questions answered
Can you scuba dive in the first trimester?
No authority we know of recommends it. DAN advises avoiding diving while pregnant, and the dive medical questionnaire says not to dive if you are pregnant or trying to become pregnant, at any stage.
I dove before I knew I was pregnant. What should I do?
Tell your doctor or midwife about the dives. DAN states there is insufficient evidence to warrant ending a pregnancy after such dives, and notes reports of dives during pregnancy without complications.
Can I snorkel while pregnant?
Snorkeling keeps you at the surface breathing normal air, so it avoids the pressure of scuba. Ask your doctor whether it suits you before booking a snorkel trip.
How long after giving birth can I dive?
DAN suggests a rule of thumb of four weeks after a vaginal delivery and at least eight weeks after a C-section, with longer delays after complications. Your physician makes the final call.
Can I dive while breastfeeding?
DAN says there is no reason for a breastfeeding mother to avoid diving, provided there is no breast infection or inflammation. Check with your doctor if you are unsure.
Planning a trip around a pregnancy? Ask Elbert
If you are expecting and your partner or friends want to dive, get in touch and we can talk through snorkel trips and courses for the group. Email Elbert at elbertgreer@fastmail.fm or call 011 (501) 226 2405.