"M Johnston 1948 Otter Lutra 15 May Seymour Canal, Alaska. Pleasant Bay - In the late dusk about 10.30 an Otter was seen swimming about 100 feet from our boat. Mr. Kofhave identified it as an otter saying that it could be distinguished from a seal by the small neck of the head and that only an inch of head was seen above the water. Also, he said the size of the ripple away from the headol was smaller than that of seal. To me it looked like a black object on the dead calm water. It dove - came up in about twenty seconds swam about 50 feet, in a N.E. direction across the Bay, generally near the deep channel of the Bay, dove again and we saw it no more.