Latest

Compound in nudibranchs toxic to cancer cell lines

Natural products play an invaluable role as a starting point in the drug discovery process, and plants and animals use many interesting biologically active natural products as chemical defence mechanisms against predators. Among marine organisms, many nudibranch gastropods are known to obtain toxins from what they are eating, such as sponges.

These toxins are used as chemical defences and bright colours to warn potential predators away,

  Salt marsh, Sept-Îles, Quebec, Canada
Salt marsh, Sept-Îles, Quebec, Canada

Hurricanes have minimal impact on salt marshes

New research suggests that major hurricanes, though devastating to humans, have a minimal impact on salt marshes. The Boston University study reveals coastal ecosystems are more at risk of erosion by waves from moderate storms than from full-fledged tropical storms. In eight different marshes studied in the United States, Italy and Australia, extreme storm events accounted for less than one per cent of erosion.

Florida power plant closures may evict manatees

If current indicators follow suit, a large percentage Florida’s manatees may soon need a new winter home. Over the next 10-20 years, the state’s coal-fired power plants are expected to close. As 60 percent of the manatee population utilize the plants for refuge during winter, many will be forced to move to the natural springs such as those on the Crystal River. The springs’ constant 74-degree temperatures could soon be overcrowded with the gentle giants.

Racoon butterflyfish
Racoon butterflyfish

Fussy butterflyfish avoid corals touched by seaweed

A new study has revealed butterflyfish are particularly fussy about their food and shelter needs, avoiding corals that have come in contact with seaweed. Conducted by the University of Delaware, the study is the first to critically evaluate how coral-seaweed interactions will impact coral associated reef fishes, a key component of coral reef resilience.

Airport security lines

TSA changes body scanner rules

The Transportation Security Administration (TSA) can now order some passengers to go through a body scanner, even if they request a full-body pat-down. The change comes at a time of heightened concern about aviation security and terror plots against commercial aviation.

Mandated screening for some passengers would be "warranted by security considerations in order to safeguard transportation security," the TSA said in a document updating the protocol.

Manitoba works to save beluga population

Manitoba has released a plan to preserve the world's largest beluga population while numbers remain abundant. "We have a healthy population, but the environment is changing," said Manitoba Conservation Minister Tom Nevakshonoff. "It's a rare opportunity when you can take something that's not in distress and focus on it now to preserve that rather than doing damage control.

Rogue waves hit without warning

In contrast to what was previously thought rather than seeing a gradual build-up of waves, the rogue wave will come seemingly out of nowhere.

New research from the University of Oxford in collaboration with the University of Western Australia shows that the anecdotal evidence heard from mariners describing "walls of water" coming at them in the open ocean may not be so far from the truth.