Check out this new video from the Witman Lab at Brown University, including highlights from their research and stunning video footage of Cashes Ledge – the jewel of the Gulf of Maine. Evan Kovacs’ video captures a macro view of the Cashes Ledge seascape, and some of the marine species who call the rocky ridges their home.
We must save this beautiful, vital place in the Gulf of Maine. Despite our efforts to show what a spectacular place this is, the White House has said Cashes Ledge isn’t under consideration for a Monument at this time. We know that the science is in our corner, and that the majority of voices speaking up about our campaign to protect this place are resoundingly supportive.
Click here to send a message to your U.S. Senators. Tell them that a Marine National Monument designation without Cashes Ledge is unacceptable and leaves New England’s most precious marine resources at risk.
If there’s one thing we can be sure of, it’s that New Englanders love lobster. It’s weaved into our culture and history, and it’s unimaginable to think of New England without this famed summer seafood.
Few know that lobsters were once so plentiful in New England that Native Americans used them as fertilizer for their fields, and as bait for fishing. And before trapping was common, “catching” a lobster meant picking one up along the shoreline!
During World War II, lobster was viewed as a delicacy, so it wasn’t rationed like other food sources. Lobster meat filled a demand for protein-rich sources, and continued to increase in popularity in post-war years, which encouraged more people to join the industry.
Popular ever since, now when most people are asked what comes to mind when they think of New England, seafood – especially lobster – is typically at the top of the list.
An industry under threat
We love our New England lobster, but there’s evidence suggesting they’re in danger of moving away from their longtime home. That’s because lobster is under threat from climate change, the effects of which can already be seen on this particular species.
The Gulf of Maine is warming faster than 99% of ocean areas. Until last winter’s uncharacteristically cold temperatures, the prior few years saw an increase in catchable lobster – as the warmer temperatures cause them to molt early, and they move toward inshore waters after molting. However, continued warming will ultimately encourage the lobsters to move north to find colder waters, where they spend the majority of their time.
This is already happening in southern New England, where the industry is already suffering, seeing lobsters migrating northward.
And we’re still learning about the potential for damage caused by ocean acidification, as well as how lobsters may be affected by an increase in colder than usual New England winters.
As we celebrate one of New England’s iconic species on National Lobster Day, let’s remember that slowing down climate change is an important priority for ensuring that future generations can enjoy not Canadian or Icelandic lobster, but New England lobster. Click here to support Conservation Law Foundation’s efforts on fighting climate change.
Over the course of the summer, we’ve been showcasing some of the fish (and other species) that make their home in New England’s ocean waters: Some of these species are endangered and in need of protections (see #SaveOceanTreasures), and some are considered underutilized because of low demand. Others are just fun or silly (or silly-looking!).
One of the main goals of the New England Ocean Odyssey project is to unlock the mysteries of the ocean: What creatures live there? What important habitats are out there, and why should we care about them? We want to let people know about this whole other world that exists just beyond what we can see. To that end, we hope you’ve found this series fun and informative, and we look forward to providing you with more “Creature Features” in the future!!
Now, in case you missed any – a Fish Friday Wrap-Up:
If you are familiar with New England Ocean Odyssey, you know we loveCashes Ledge, a majestic 25-mile undersea mountain range and biological hot spot in the Gulf of Maine.
You know that this natural laboratory offers scientists the chance to explore a relatively pristine and unique ecosystem, to discover and observe rare and endangered species, and to hypothesize about what the greater Gulf of Maine looked like before the commercial fishing industry existed.
You know that Ammen Rock, the highest peak in the mountain chain, rises from a depth of 460 feet all the way up into the photic zone (exposure to sunlight), just 40 feet below the ocean’s surface. And you know that Ammen Rock disrupts the dominant Gulf of Maine current, swirling nutrient- and oxygen-rich waters from the seafloor to the top of the water column, providing ideal conditions for a huge array of marine life including sponges, corals, anemones, predatory fish, sharks, whales, and more.
But what specific special species reside at Cashes Ledge, and what migratory visitors stop by throughout the year? Let’s dive a little deeper and find out!
1. (Unclassified) Blue Sponge
This species is so incredibly rare, it hasn’t even been sighted anywhere apart from the rocky walls of Cashes Ledge, let alone taxonomically classified. Needless to say, we have a lot to learn about this species. Cashes is also home to a variety of bright red, orange, and yellow sponges, including mounding sponges as big as footballs!
Cod swim under a wall of sponges and other invertebrates. Image via NOAA/ONMS
Sponges are primitive creatures that latch on to hard surfaces anywhere from the intertidal zone to the deep ocean floor. They filter feed by absorbing tiny organisms through incurrent (think “inbound”) pores and excreting waste through excurrent (“outbound”) pores. Many sponges can reproduce either sexually or asexually.
2. Red Cod
You’ve read about, seen, and probably eaten Atlantic cod…but have you ever heard of red Atlantic cod? While genetic testing has yet to determine if this variation is a distinct species, Graham Sherwood, Research Scientist at the Gulf of Maine Research Institute in Portland, Maine, hypothesizes that it is not. All cod eat high levels of carotenoids (natural pigments found in organisms such as crabs and worms), so it’s no surprise that some cod are red in color. But why are some red while most are olive-colored?
An olive cod (top) and a red cod (bottom) swim through kelp forests at Cashes Ledge. Images via Brian Skerry for New England Ocean Odyssey.
Sherwood’s theory is that the red coloring is an adaptive advantage. Red cod typically permanently reside in shallower kelp forests, while olive-colored cod roam around deeper waters in the North Atlantic. The red coloring may be a U/V protectant or a form of camouflage for shallower waters. We’ll have to stay tuned to find out if red cod are a separate species, or if they are just a colorful variation of olive-colored Atlantic cod.
Urticina crassicornis, the Christmas anemone, resides on rock faces at depths up to about 100 feet and may grow to be a foot tall and 8 inches in diameter. It feeds on crabs, urchins, mussels, gastropods, chitons, barnacles, and fish by stinging and stunning prey with venomous cells found in the anemone’s tentacles.
The candy-striped shrimp, Lebbeus grandimanus, is immune to the Christmas anemone’s sting; the two organisms live in a commensal relationship whereby the anemone provides shelter for the shrimp, and the shrimp does not affect the anemone.
A Northern red anemone on a rock wall at Cashes Ledge. CLF/Brett Seymour.
Porbeagle, Lamna nasus. Credit NMFS/E. Hoffmayer, S. Iglésias and R. McAuley.
No, that’s not a white shark – it’s the great white’s lesser known relative, the porbeagle, Lamna nasus. The porbeagle can be easily distinguished from a white shark by its second dorsal fin (that tiny second bump on the shark’s back before its tail). These big guys can grow up to 11 ½ feet long and are highly migratory throughout the Northwest Atlantic. They tend to stay out of shallow waters along the coast, preferring pelagic waters from the surface to depths of 1000 feet. In the Gulf of Maine, they feed on mackerel, herring, other small fish and sharks, and squids.
NOAA listed the porbeagle as a “Species of Concern” for the Northwest Atlantic stock in 2006, the same year that the International Union for the Conservation of Nature listed the subpopulation as endangered. Since the 1960s, overfishing has been a major threat to porbeagles, which are slow-growing with low productivity rates, making it difficult for populations to recover. In the U.S., the species is managed by the Highly Migratory Species Fishery Management Plan. NOAA’s National Marine Fisheries Service is currently reviewing two 2010 proposals to list the porbeagle on the Federal List of Endangered and Threatened Wildlife under the Endangered Species Act.
5. North Atlantic Right Whale
The waters off the coast of New England get some magnificent, gigantic visitors. Endangered North Atlantic Right Whales, Eubalaena glacialis, hang out around New England and the Bay of Fundy in the summer and fall to feed on zooplankton and raise their young. They move about the Gulf of Maine in a regular pattern, often stopping at Cashes Ledge, where regular circulation of the water column produces plankton-rich waters. In the winter months, the whales typically migrate to birthing grounds in the coastal waters off the southeastern United States.
The North Atlantic Right Whale was subject to intensive whaling from the 1500s through 1935; populations off the east coast of North America are still struggling to recover, due in large part to boat collisions and entanglement in fishing gear.
A North Atlantic Right Whale in Cape Cod Bay in front of Provincetown, MA. Image via Brian Skerry for New England Ocean Odyssey.
6. Bubble Gum Coral
Deep-water coral colonies thrive in the cold, nutrient-rich waters of Cashes Ledge. Paragorgia arborea, nicknamed bubble gum coral for its pink color, is a fan-shaped coral (aka “sea fan”…creative, right?) that typically inhabits exposed locations at depths of 600 to 4,300 feet. It can grow up to six meters tall, making it a real treasure for divers to spot. At Cashes Ledge, Paragorgia inhabits the hard-bottom basalt substrate.
Deep sea corals grow slowly and may live to be thousands of years old, making them extremely susceptible to lasting damage from bottom trawlers. One sweep of a trawl net can destroy centuries of growth – a problem not only for the corals, but also for the marine species that use the corals as a nursery and refuge habitat.
Paragorgia colonies in the New England Seamount chain. Image via NOAA Ocean Explorer.
These are just six of the marvelous, charismatic species that depend on the nutrient-rich waters of Cashes Ledge. If we are to protect them, we must start by protecting Cashes Ledge.
The New England Ocean Odyssey photo contest is back! The new contest will run from July 29 through Labor Day (September 7, 2015), exclusively on Instagram, using the hashtag #SeeMySeaStory.
New Englanders experience the ocean in a multitude of ways. This summer’s contest encourages anyone who has an ocean story to showcase it — whether under, on, or near the water!
Maybe you have a great photo of Acadia, Cape Cod, a fishing or sailing trip, or something else from New England’s long, winding shore? Share them with us! All you need to do to enter the contest is to post your photo on Instagram and include the hashtag. Two winners will be selected throughout the time period, and one after the contest closes.
Winners will receive a photo book from renowned National Geographic photographer Brian Skerry, and/or exclusive New England Ocean Odyssey “swag” — along with the opportunity to showcase your photo on the New England Ocean Odyssey website and social media.
Feature photo: October 13, Common dolphin jumping a boat wake in the Atlantic Ocean. Artie Raslich/Gotham Whale
The Gulf of Maine is traversed by many species of marine mammals, from soulful harbor seals to the greatest of whales, either as local residents or tourists on their breeding and feeding voyages. Among the most charismatic of all are dolphins. Besides spotting them from whale-watching boats, how much do you actually know about New England’s native dolphins?
“When people think of dolphins, they think of tropical animals,” says Brian Sharp, stranding director for the International Fund for Animal Welfare, located in Yarmouth Port on Cape Cod. “But you’ve really not seen a dolphin until you’ve seen one of the species endemic to New England waters.”
The two species of dolphin most frequently sighted around Cape Cod Bay have one thing in common: their markings look like custom paint jobs. And although striped dolphins, Risso’s dolphins, and the occasional bottlenose will sometimes pass through, it’s these two species of streamlined wave-riders that New Englanders most often spy skirting the edge of the continental shelf.
Common Dolphins (Delphinus delphis)
At 6 to 7 feet long and a svelte 165 to 300 pounds, common dolphins are like “wide receivers” in build, says Tony LaCasse, media relations director of the New England Aquarium and a longtime dolphin rescuer. Even when stranded, common dolphins are communicative, chattering to the other members of their pod through clicks, whirrs, and whistles. Rescuers will often point them towards each other in order to reassure them. They are dark grey and tan with white countercolored bellies, an hourglass shape on their side, and a stripe from their eye to their mouth giving them a masked appearance. They have a long rostrum, or snout.
Even salty, seasoned boat captains describe Atlantic white-sided dolphins as “beautiful.” These cetaceans sport natural detailing of bold white and silver patches on their sides, with a yellow or tan stripe that leads to their tail. At 7 to 9 feet long, and weighing in at more than 500 pounds, they are “girthier” than common dolphins, a look accentuated by their short rostrum. LaCasse compares them to “linebackers:” brawny, husky, and stoic while awaiting rescue at the beach
Most dolphins skim the continental shelf and shelf edge, swimming closer to the coastline if they are hot on the trail of prey such as a school of herring, hake, mackerel, smelt, or anchovies.
Unfortunately, coming near to shore makes dolphins vulnerable to running aground. It’s really impossible to talk about dolphins in New England without giving attention to strandings. Knowing how this phenomenon occurs can help us understand even more about our endemic dolphin species.
Mass strandings in New England have happened longer than humans can remember. Cape Cod Bay, a hooked sandbar with a gently sloping shore, is a notorious trap for dolphins. Anyone who has combed the beaches of the Cape knows that when the tide goes out, it runs out far and fast—so if you are a dolphin who has pursued your prey close to shore, that shallow beach profile with its hidden sandbars can leave you high and dry before you even know what’s happening.
Along the New England coast, “as far as we know, the commonest mass strandings are behaviorally driven, without a human cause,” says Michael Moore, Director of the Marine Mammal Center at Woods Hole Oceanographic Institution. Dolphins, the highly social animals that they are, may follow a sick lead animal inland. Even healthy lead animals can have their echolocation disoriented by mucky water caused by a turn of the tide, or the cloudy aftermath of a nor’easter.
Once dolphins are stranded, time is of the essence in a rescue. Gravity on land presses hard on marine mammals whose skeletons have not evolved to resist its force and protect their internal organs (seals are built to spend significant periods on land, but not so cetaceans). They can suffer significant internal trauma if out of the buoyant salt water for too long. Also, the hot sun can burn dolphin skin in summer, and frostbite can singe it in the winter. There is little temporal margin for error if dolphins are going to be viable again back at sea.
Mass dolphin strandings (from 2 to 20 individuals) occur most often in the winter, from December through April. With the lack of daylight on short winter days, the Northeast Regional Stranding Network monitors and patrols beaches in order to stay ahead of a potential crisis.
Imagine a stranding like a military triage situation. The Cape’s tidal flats can go out a long way, so a dolphin might be stranded as much as a mile from the road. They might be in three feet of tidal mud, or beached on a sand bar far from the water’s edge. Rescuers have refined the use of all-terrain dolphin carts, stretchers with cut-out holes for pectoral fins, and transport trailers that are enclosed and lined to make rescue faster, more efficient, and less traumatic. Even with all that technology, it still can take six people to carry and load a slippery, unwieldy dolphin, so rescuing is muddy, strenuous, and emotional work!
Rescued dolphins are tagged and then released from Herring Cove or Race Point in Provincetown, MA where there are fast drop-offs into deep water. The Provincetown Fire Department sets up lights on the beach to aid rescuers, and trained response volunteers in drysuits walk the dolphins out into the water.
The satellite tags reveal that after a day or two of getting their bearings, even single dolphins usually find their way back to the pod. They will link up with other released dolphins in their family group and then travel together, often heading out towards Georges or Stellwagen Bank… staying well clear of land!
While little can be done to prevent geographically-caused mass strandings, you can support your local rescue network to make sure that stranded animals have a viable chance at survival. Single animal strandings often caused by illness, injury, or entanglement in fishing gear are more complex. In that case, advocating for responsible, sustainable fishing practices will help dolphins and other pelagic species avoid becoming bycatch casualties.
Dolphins are very much residents of New England waters, and there are more of them out there than we might realize: “When you see four or five dolphins at the surface,” says Brian Sharp, “it can be an iceberg effect: that really is a small portion of the number of animals actually around you, below the water and beyond your vision.”
Hopefully what you have learned here will help expand your vision so that you will see our endemic dolphin species even more clearly!
If you find a dolphin stranded south of Boston, please telephone IFAW’s stranding hotline at 508-743-9548. From Boston on north, please dial the New England Aquarium’s Marine Animal Hotline at 617-973-5247. For entanglements or by-caught cetaceans, please call the Provincetown Center for Coastal Studies at 1-800-900-3622.
NOW is the time for you to be part of the planning process that is taking place to better coordinate our coastal and ocean uses in the face of all these changes. Everyone who cares about the ocean and how we use it should have a voice in the planning – a “seat at the table.”
How can you get involved?
Learn about ocean planning! There is a fantastic new film called Ocean Frontiers that tells stories about ocean planning from people and places that might surprise you: farmers in Iowa, shipping companies in New England, and fishermen in Oregon – all committed to planning and doing things better for ocean health. Find an Ocean Frontiers screening near you, or host your own!