Matching Pairs At the Beach Vocabulary Online version 5th Grade - Unit 2 Week 1 by Miss Sonzogni 1 Lamented 2 Tweezers 3 Hammocks 4 Algae 5 Concealed 6 Driftwood 7 Sternly 8 Sea Urchins Hanging beds or couches made of canvas, cord, or other materials. Felt or showed grief A group of living things, mostly found in water, that can make their own food. Strictly; firmly Small pinchers for picking up small objects. Small, round sea animals with spiny shells. Put out of sight; hidden. Wood carried along by water, or washed ashore by the water.