In the opening chapter of The World Beneath: The Life and Times of Unknown Sea Creatures and Coral Reefs, his acclaimed combination coffee table book and coral reef reference guide, Richard Smith, PhD, recalls his six months of shore diving and research in 2007 at the Wakatobi reefs in Indonesia.
This past summer the Florida Keys experienced the effects of a marine heatwave event that lasted longer and was more intense than anything in recent recorded history. By early June 2023 the National Oceanic and Atmospheric Administration (NOAA) Coral Reef Watch (CRW) issued bleaching warnings for some areas in the Florida Keys and other locations in the Caribbean.
I am about two and a half months postpartum with no complications and have received clearance from my physician and a dive specialist to resume diving.
Pieter-Jan van Ooij, MD, PhD, is the head of the Department of Research, Innovation, and Education at the Royal Netherlands Navy’s Diving Medical Centre (DMC).
Most divers know their scuba cylinders need a visual inspection every year and a hydrostatic test every five years (referred to as a requalification or a hydro). The actual regulations for cylinders and other dive equipment, however, are less clear.
Most divers’ love of the sport stems from a drive to explore a foreign environment. With exploration must come the ability to navigate. Nowhere else on Earth can one become more lost than in a liquid, while simultaneously requiring constant individual concentration on safety techniques, breathing gas, buoyancy, horizontal trim, depth, and time.
Divers spend much of their time underwater with a select group of buddies — the ones we trust to get us through the dive and surface with fresh experiences and stories to tell. Newly certified divers have had limited interactions underwater, having dived only with classmates, instructors, and assistant instructors during their classes.
The spectacular ecosystem of Indonesia’s Raja Ampat offers ample opportunities for fish portraits and macro shots with a 100mm lens, but the broad expanses of pristine hard corals punctuated with colorful soft corals and sea fans made it difficult for me to forego using my wide-angle lens during a recent liveaboard trip.
To clear up any confusion divers may have about patent foramen ovale (PFO), I will share how I explain the condition to patients.
Shallow coral heads are on both sides of the M’il Channel opening as we slow down to locate our mooring ball. The incoming tide brings clean, blue water into the lagoon, creating opportunities for encounters with one of Yap’s main attractions just a few feet below the surface.
