The Beacon: Sodavy Ou's blog

Small Crabs Play a Big Role as Corals’ First Line of Defense from Predators

A crab (Trapezia sp.) defends its coral host. (Photo: Richard Ling / Flickr Creative Commons)

Just as some people have their own sorts of protections from intruders, some corals have their own creative defenses to guard them from predation. It’s a hard knock life for corals: In addition to ocean acidification, overfishing, and nutrients pollution, corals have to deal with sea stars and snails that can devour them.


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Impacts of Climate Change on Highly Migratory Species Prioritized in NMFS Management Plan

Bluefin tuna are a highly migratory species affected by climate change

A bluefin tuna, a migratory species affected by climate change. (Photo: Oceana / Keith Ellenbogen)

Many marine species face endless obstacles: Overfishing, pollution, and habitat destruction are large threats, as well as climate change and its associated negative impacts. Factors ranging from their habitat, food source, predator defense, migration routes, and breeding grounds are already changing from warming seas, and these impacts are so widespread that it’s caught fisheries managers’ attention.


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BP Deepwater Horizon Spill Damages Heart Development in Fish

(Photo: Oceana / Tim Calver)

A disturbing finding on the effects of oil spill was announced on Monday, as the 4-year commemoration of the BP Deepwater Horizon spill approaches. A recent study found that polycyclic aromatic hydrocarbons (PAHs)—known to be associated with cancers—generated from the oil spill caused heart defects in commercially important tuna and amberjack.


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