Marine Nuisance Species, Didemnum, a colonial tunicate; ascidian; sea squirt

Map location no.	Location name or station no.	Location abbrev. (2nd part of image filename)	Region	Country	Lat	Lon	Water depth, m	Water temp. deg C	Substrate type	Comment
1	Sandwich tide pool	STP	Sandwich, MA	USA	41 deg 46.42 min N	70 deg 29.30 min W	intertidal to 11 ft (3.4 m)		boulder	Located just south of the east entrance of the Cape Cod Canal at a Sandwich town beach. Photographed June 2003.
1	Sandwich tide pool	STP	Sandwich, MA	USA	41 deg 46.42 min N	70 deg 29.30 min W	intertidal to 11 ft (3.4 m)		pebbles, cobbles, boulders, coarse sand	Located just south of the east entrance of the Cape Cod Canal at a Sandwich town beach. Photographed December 4, 2003.
1	Sandwich tide pool	STP	Sandwich, MA	USA	41 deg 46.42 min N	70 deg 29.30 min W	intertidal to 11 ft (3.4 m)	1	boulder	Located just south of the east entrance of the Cape Cod Canal at a Sandwich town beach. Photographed February 3, 2004.
8	Chatham Harbor	CH	Chatham, MA	USA	41 deg 39.9 min N	69 deg 57.4 min W	intertidal		wood pilings, blue mussels	Dock in Chatham Harbor. Photographed August 7, 2003.
12	Provincetown Harbor	PTH	Provincetown, MA	USA	42 deg 02.95 min N	70 deg 10.85 min W	intertidal		metal pilings, tires, ropes	Macmillan Wharf (Provincetown town dock). Photographed September 14, 2003.
14	Eel Pond	EP	Woods Hole, MA	USA	41 deg 31.2 min N	70 deg 40.0 min W	0.5-2	2.2	floating docks, ropes	Photographed specimens collected at water depths of 0.5 to 2 m. January 7, 2004.
14	Eel Pond	EP	Woods Hole, MA	USA	41 deg 31.2 min N	70 deg 40.0 min W	0.5-2	-2	floating docks, ropes	Photographed specimens collected at water depths of 0.5 to 2 m. January 15, 2004.
19	Vineyard Haven	VH	Vineyard Haven, MA	USA	41 deg 27.4 min N	70 deg 35.9 min W	0.5	0	rubber floats of floating dock	Floating dock adjacent to the ferry pier. Photographed January 22, 2004.
20	Oak Bluffs	OB	Oak Bluffs, MA	USA	41 deg 27.6 min N	70 deg 33.6 min W	1-2	0	rope, steel bulkhead	Harbor entrance and at the head of the harbor. Photographed January 22, 2004.
21	Graduate School of Oceanography, URI	GSO	Narragansett, RI	USA	41 deg 29.3 min N	71 deg 25.5 min W	intertidal		wood pilings, mussels, rocks	Beneath and adjacent to the dock at GSO. December 1, 2002.
21	Graduate School of Oceanography, URI	GSO	Narragansett, RI	USA	41 deg 29.3 min N	71 deg 25.5 min W	intertidal		wood pilings, mussels, rocks	Beneath the dock at GSO. D. sp. removed by ice action. Photographed March 5, 2003.
22	Fort Island Narrows	FIN	Fort Island Narrows, ME	USA	43 deg 53.68 min N	69 deg 35.27 min W	12		shell hash, gravel	Fort Island Narrows; in the Damariscotta River between Fort Island and the western river bank. July 19, 1993. Identified by G. Lambert, January 2004.
34	Piscataqua River	PR	Newington, NH	USA	43 deg 6.47 min N	70 deg 47.84 min W	12-15		rock surface	Piscataqua River bed, in NH part of river, off Newington, NH. Photographed October 29, 2002. Provisional identification from photo (M. Carman, P. Valentine).
35	Thrumcap Island	TI	Damari-scotta River, ME	USA	43 deg 49.22 min N	69 deg 32.98 min W	10-15		rock surface	Off Thrumcap Island, at the mouth of the Damariscotta River, ME. Photographed October 7, 2002. Identified by R. Miller.
35	Off Thrumcap Island	TI	Damari-scotta River, ME	USA	43 deg 49.22 min N	69 deg 32.98 min W	10-15		rock surface	Off Thrumcap Island, at the mouth of the Damariscotta River, ME. Photographed August 22,2003. Identified by R. Miller.
38	Town Cove	TC	Orleans, MA	USA	41 deg 47.5 min N	69 deg 59.07 min W	0.1		floating dock with styrofoam floats	Floating dock at Nauset Marine, Town Cove, Orleans, MA. Photographed October 26, 2004.
39	Town Cove	TC	Orleans, MA	USA	41 deg 47.68 min N	69 deg 58.93 min W	0.1		floating dock	Floating dock at Goose Hummock Shop, Town Cove, Orleans MA. Photographed October 26, 2004.
40	Town Cove	TC	Orleans, MA	USA	41 deg 47.82 min N	69 deg 58./87 min W	0.1		floating dock	Floating dock north of Nauset Marine on western shore of Town Cove, Orleans, MA. Photographed October 26, 28, 2004.
41	Town Cove	TC	Orleans, MA	USA	47 deg 48.28 min N	69 deg 58.43 min W	0.1		floating dock	Floating dock west of Hopkins Island on western shore of Town Cove, Orleans, MA. Photographed October 26, 2004.
42	West Falmouth Harbor	WFH	Falmouth, MA	USA	41 deg 36.22 min N	70 deg 38.42 min W	0.3		chain attached to floating dock	Floating dock at town pier off Nonamesset Rd., Falmouth, MA. Photographed December 9, 2004.
51	Fort Point	FP	Portsmouth Harbor, New Castle, NH	USA	42 deg 04.28 min N	70 deg 42.77 min W	5		ropes hanging from pier	Ropes attached to Coast Guard pier at Fort Point, New Castle, NH. Photographed August 2002. Identified by L. Harris.
51	Fort Point	FP	Portsmouth Harbor, New Castle, NH	USA	42 deg 04.28 min N	70 deg 42.77 min W	5		ropes hanging from pier	Ropes attached to Coast Guard pier at Fort Point, New Castle, NH. Photographed August 2002. Identified by L. Harris.
53	Iselin Dock	ID	Woods Hole, MA	USA	41 deg 31.4 min N	70 deg 40.3 min W	3-10		steel dock pilings	Pilings of the Iselin Dock at WHOI, Woods Hole, MA. Photographed 2002, 2004. Identified by P. Valentine, 2005.
53	Iselin Dock	ID	Woods Hole, MA	USA	41 deg 31.4 min N	70 deg 40.3 min W	18-20		gravel	Seabed near the Iselin Dock at WHOI, Woods Hole, MA. Photographed Spring 1998. Provisional identification from photo.
54	Strong Island	SI	Pleasant Bay, Chatham, MA	USA	41 deg 43.25 min N	69 deg 57.76 min W	2-3		rock surfaces	Boulders off the NW port of Strong Island, Chatham, MA. Photographed September 4, 2005. Identified by M. Carman (WHOI), 2005.
60	Cobscook Bay	CCB	Eastport, ME	USA	44 deg 56.14 min N approx.	67 deg 02.95 min W approx.	5-8		rocky seabed	Rocky seabed in Cobscook Bay near location of old toll bridge from Eastport (Old Toll Bridge Road) to Perry ME. Photographed August 6, 2005. Identified by L. Harris.
60	Cobscook Bay	CCB	Eastport, ME	USA	44 deg 56.14 min N approx.	67 deg 02.95 min W approx.	5-8		rocky seabed	Rocky seabed in Cobscook Bay near location of old toll bridge from Eastport (Old Toll Bridge Road) to Perry ME. Photographed September 10, 2006. Identified by L. Harris.
60	Cobscook Bay	CCB	Eastport, ME	USA	44 deg 56.14 min N approx.	67 deg 02.95 min W approx.	5-8		rocky seabed	Rocky seabed in Cobscook Bay near location of old toll bridge from Eastport (Old Toll Bridge Road) to Perry ME. Photographed September 2007. Identified by L. Harris.
61	Beavertail Point	BP	Conanicut Island, RI	USA	41 deg 27.13 min N approx.	71 deg 23.74 min W approx.	intertidal		rock surfaces	Intertidal rock surfaces, eastern shore of Beavertail Point, Conanicut Island, RI. Photographed and identified by L. Auker, October 4, 2005.
63	Osterville Grand Island	OGI	Cotuit Bay, MA	USA	41 deg 37.20 min N (approx.)	70 deg 25.54 min W (approx.)	0-.25 (approx.)		plywood, styrofoam, tunicates	Overgrowing solitary tunicate Styela clava and encrusting plywood and styrofoam of channel markers in Cotuit Bay, west of Osterville Grand Island, MA. Photographed Nov. 15, 2005. Identified by P. Valentine and M. Carman, 2005.
63	Osterville Grand Island	OGI	West Bay, MA	USA	41 deg 37.01 min N (approx.)	70 deg 24.05 min W (approx.)	0-.25 (approx.)		plywood, styrofoam, tunicates	Overgrowing solitary tunicate Styela clava and encrusting plywood and styrofoam of channel markers in West Bay, east of Osterville Grand Island, MA. Photographed Nov. 15, 2005. Identified by P. Valentine and M. Carman, 2005.
63	Osterville Grand Island	OGI	North Bay, MA	USA	41 deg 37.87 min N (approx.)	70 deg 24.33 min W (approx.)	0-.25 (approx.)		plywood, styrofoam, tunicates	Overgrowing solitary tunicate Styela clava and encrusting plywood and styrofoam of channel markers in North Bay, north of Osterville Grand Island, MA. Photographed Nov. 15, 2005. Identified by P. Valentine and M. Carman, 2005.
64	Wellfleet Harbor	WH	Wellfleet, MA	USA	41 deg 55.52 min N (approx.)	70 deg 02.41 min W (approx.)	subtidal		plastic mesh bags	Growing on plastic mesh bags and on oysters on subtidal sand flat in Wellfleet Harbor, MA. Photographed Nov. 14, 2005. Identified by P. Valentine and M. Carman, 2005.
69	Stage Harbor	SH	Chatham, Cape Cod, MA	USA	41 deg 39.90 min N	69 deg 58.48 min W	0.5-2		green and red alga	Overgrowing green and red alga attached to plastic harbor mooring buoy in Stage Harbor, MA. Identified by P. Valentine, July 25, 2006.
73	Long Island Ledges	LIL	Bremen, ME	USA	43 deg 59.19 min N	69 deg 24.07 min W	intertidal during neap tide		vertical rock surface	Growing on vertical rock surface in intertidal zone. Identified by P. Valentine, 2006.
74	Wentworth Point	WWP	Damariscotta River, Walpole, ME	USA	43 deg 56.10 min N	69 deg 34.84 W	1		fouling panel	Growing on 20 x 20 cm fouling panel at the dock of the Darling Marine Center. September 29, 2006. Identified by J. Dijkstra, 2006.
75	Cobscook Bay 2	CCB2	Eastport, ME	USA	44 deg 53.36 min N	67 deg 0.76 min W	0.5-1.5		wood pier and floating dock	Growing on wooden pier and floating dock near aquaculture site. Eastport, ME. Photographed September 10, 2006. Identified by L. Harris.
75	Cobscook Bay 2	CCB2	Eastport, ME	USA	44 deg 53.36 min N	67 deg 0.76 min W			wood pier pilings	Growing on wooden pier near aquaculture site. Eastport, ME. Photographed September 2007. Identified by L. Harris.
77	Boston Harbor	BOH	Winthrop, MA	USA	42 deg 22.05 min N	70 deg 59.41 min W	1.5-3.0	5	solitary tunicate	Growing on Styela clava attached to mussels on seabed in Boston Harbor, MA. Photographed December 8, 2006. Identified by P. Valentine.
78	Sandy Bay	SAB	Rockport, MA	USA	42 deg 39.58 min N (approx.)	70 deg 36.13 min W (approx.)	<5	14	rocky seabed	Growing on rocky seabed of large boulders and cobbles in Sandy Bay, off eastern end of Old Garden Beach, Rockport, MA Photographed June 18, 2006. Identified by P. Valentine.
79	Fort Wetherill	FTW	Narragansett Bay, Jamestown, RI	USA	41 deg 28.63 min N (approx)	71 deg 21.50 min W (approx)	10-12		rocky seabed	Growing on steep rock wall in Narragansett Bay, east of Fort Wetherill, Jamestown, RI. Photographed August 2000. Identified by P. Valentine.
80	Sandwich Town Beach	STB	Cape Cod Bay, Sandwich, MA	USA	41 deg 46.11 min N (approx)	70 deg 28.95 min W (approx)	4		gravel seabed	Growing on gravel seabed in Cape Cod Bay at Sandwich Town Beach, MA. Photographed November 7, 2006. Identified by P. Valentine.
85	Estes Head	EHD	Eastport, ME	USA	44 deg 53.62 min N	67 deg 00.01 min W			woods dock pilings	Commercial pier at Estes Head, Eastport, ME. Photographed September 2007. Identified by L. Harris
86	New Castle Island	NCI	New Castle, NH	USA	43 deg 03.47 min N	70 deg 43.59 min W			mussels, unknown	Wentworth Marina, in Little Harbor on southwest shore of New Castle Island, NH. Photographed November 5, 2007. Identified by L. Harris.

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Didemnum - New England Coast Locations